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We’re looking for an experienced iOS app developer to help design and build the foundations of a real-time, AUDIO-driven iPhone application.
This is an end-to-end role. You will be responsible for exploring technical approaches, writing production-quality code, and building a working app prototype. The focus is on implementation quality, performance, and clarity of user experience rather than visual polish.
What you’ll be working on
Designing the overall iOS app architecture (state, lifecycle, performance considerations)
Implementing real-time audio input handling on iOS
Writing and integrating core application logic
Building a clear, minimal UI that communicates system state effectively
Testing, iterating, and refining behaviour under real-world conditions
Documenting technical decisions and trade-offs
You will be given a suggested approach to start from, but you’re expected to challenge, improve, and propose alternatives where appropriate.
Required skills (must-have):
Strong iOS development experience
Experience building production-grade mobile apps, not just demos
Experience working with real-time or performance-sensitive systems
Confidence handling audio or time-based data
Ability to design clean, maintainable app architectures
Strong debugging and testing skills
Highly desirable skills:
Experience with Core Audio / AVFoundation
Experience with real-time signal or data processing
Experience reverse-engineering existing apps to understand behaviour, architecture, or UX patterns
Ability to analyse competitor or reference apps and extract technical and UX insights
Experience simplifying complex technical behaviour into intuitive user interfaces
How we’ll assess fit
Please include:
Examples of iOS apps you’ve built or worked on
Any experience with audio, real-time systems, or reverse engineering
A short explanation of how you typically approach unknown or poorly defined technical problems
Engagement details
Short-term contract to start, with scope to extend
Flexible hours
NDA required
Remote work
This role is only suitable for developers with hands-on experience working with audio, signal processing, or other time-based data. If you apply, you should be able to clearly describe where you’ve worked with audio in practice, not just in theory. This could include real-time audio capture, analysis, DSP, performance-sensitive systems, or audio-driven applications. Please reference specific projects, case studies, or similar.
Experience with reverse engineering existing applications or systems is also important for this role. You should be comfortable analysing how existing apps behave, identifying architectural patterns, and understanding technical or UX decisions without access to source code. When applying, please briefly describe how you would reverse engineer an existing iOS app on the app store to help build my new app.
KEY SKILLS ARE REVERSE ENGINEERING, iOS APP BUILDING AND AUDIO
Client's questions:
Have you worked with real-time audio or audio processing before? Briefly describe what you built.
Have you ever reverse-engineered an app or system to understand how it works? If yes, briefly explain.
Describe your recent experience with similar projects
Web & Hardware Integration Developer (USB + BLE Biometric Sensors)
Applied
$20 - $50
/ hr
4 hours ago
Client Rank
- Good
Payment method verified
Phone number verified
$2 885 total spent
5 hires, 3 active
8 jobs posted
63% hire rate,
6 open job
18.12 /hr avg hourly rate paid
155 hours paid
5.00
of 2 reviews
Industry: Food & Beverage
Company size: 10
Registered: Dec 8, 2025
United States
Sunriver
21:21
4
We are seeking an experienced developer to integrate multiple biometric sensor devices into a web-based muscle testing application hosted on Replit.
The project involves connecting USB and Bluetooth Low Energy (BLE) devices, such as heart rate monitors, IMUs, GSR sensors, respiration belts, force sensors, and polygraph hardware, and streaming their data in real time into the browser using Web Bluetooth, WebUSB, or Web Serial APIs. When browser access is not possible, a lightweight desktop bridge may be used.
All integrations must rely strictly on documented, vendor-approved protocols. Reverse engineering or firmware modification is not permitted. Deliverables include clean, structured data output, stable real-time performance, and clear user documentation.
Required Skills
- JavaScript (browser-based device integration)
- Web Bluetooth, WebUSB, Web Serial
- BLE / GATT protocol experience
- USB Serial / HID device integration
- Real-time data streaming (WebSockets)
- Hardware–software integration
- Experience with physiological or motion sensors (HR, GSR, IMU, respiration)
- Clear technical documentation
Working with Christopher was a fantastic experience. They are highly professional and treat freelancers as true partners…Working with Christopher was a fantastic experience. They are highly professional and treat freelancers as true partners in their projects. They are fair, reasonable with their expectations, and show a great deal of trust in your expertise. I look forward to our next collaboration.
Dec 2025 - Dec 2025 22 hrs @ $16.20/hr Billed: $356.49
Web, Mobile & Software Dev, Other - Software Development
I need a Windows application developed to convert protected Tradestation .ELD easylanguage files into plain text files. Once you demonstrate its functionality, I'll make full payment and receive the software.
Scope of work
- Develop application to convert .ELD files to plain text on Windows 10 and 11
- Include input file selector and output path parameter
- Create CONVERT button to initiate file conversion
- Send text files from sample .ELD for testing
- Provide application source code, .exe, and install file
Additional information
You must prove the software works with the sample test file before I make payment.
I need my existing Android APK hardened with SSL pinning so that every outgoing and incoming connection—both GET and POST—remains immune to any man-in-the-middle snooping or packet capture attempts. The source already relies on HTTPS, but that alone is proving insufficient for the security posture I’m after.
Your task is to integrate certificate or public-key pinning directly into the networking layer (the build currently uses OkHttp with Retrofit; if you prefer another robust approach such as Volley or native HttpsURLConnection, that is fine as long as the result is rock-solid). Once complete, any request routed through the app must fail gracefully when the pinned certificate or key is absent or tampered with, while continuing to operate normally under legitimate conditions.
Deliverable checklist:
• Updated code or patch with the pinning logic in place
• Clear build/run instructions so I can reproduce the signed APK locally
• A brief verification guide showing how a MITM attempt is blocked in both GET and POST scenarios
If you have prior examples of shipped apps or open-source contributions where you handled SSL pinning, please mention them—seeing that experience will move things along faster.
We are building Voicera, a high-quality AI virtual receptionist for medical practices in Germany.
This is not a chatbot project – it is a mission-critical voice interface between doctor’s offices and patients.
We are looking for an experienced Conversational AI Architect / Prompt Engineer to design, implement and hand over production-ready conversational pathways for real-world medical phone calls.
This role has a strong focus on quality, reliability and non-hallucination.
The AI must never invent information and must handle uncertainty safely. The prompting must be in German language in the end. If you dont speak German, then translators can be used, but i will prefer German speakers over english speakers.
⸻
Scope of Work
The core of this project is the design and implementation of production-ready conversational pathways for a German-language AI voice assistant used by medical practices. The assistant will handle real patient phone calls and must behave reliably, safely and without hallucinations. The scope includes multiple conversation scenarios such as incoming calls, appointment requests, structured information gathering, callbacks and outbound calls, with clearly defined boundaries, fallback logic and escalation paths to human staff.
⸻
Conversational Pathway Design
You will design structured, deterministic conversational flows specifically optimized for voice interactions in a medical context. The focus is on clarity, robustness and patient-safe behavior, including confirmation logic, error handling and clear decision trees. The AI must always stay within its defined knowledge boundaries and explicitly avoid guessing or inventing information.
⸻
Prompt Engineering
You will be responsible for full system-level prompt engineering in German, including base system prompts, scenario-specific prompts, fallback prompts and clarification logic. All prompts must be designed for voice conversations rather than chat interfaces and must prioritize consistency, predictability and non-hallucinating behavior. Prompting must reflect real-world medical communication standards and constraints.
⸻
Blend.ai Integration
The conversational pathways will be implemented using blend.ai as the conversational engine. You will integrate blend.ai with our existing backend architecture, where blend.ai is responsible only for conversation handling while orchestration and logic remain server-side. Experience with adapting conversational design to platform-specific constraints is expected.
⸻
Server Integration & Call Orchestration
Our backend server, hosted on DigitalOcean, acts as the central interface between telephony, blend.ai and downstream systems. Incoming calls are routed through the server to blend.ai, and structured conversation outputs are sent back to the server for further processing. Additionally, outbound calls such as callbacks or queued patient follow-ups are triggered by the server and executed via blend.ai. You will implement and test this bidirectional communication reliably.
⸻
Quality Assurance, Staging & Testing
This project requires a professional QA approach rather than experimental prompting. You will create staging versions, iteratively improve conversational behavior and actively test edge cases, ambiguous input and failure scenarios. A strong emphasis is placed on preventing hallucinations and ensuring safe, predictable responses in all situations.
⸻
Handover & Documentation
At the end of the project, you will provide a clean, well-structured handover including documentation of conversational logic, prompt structure and system integration. The final result must be production-ready, maintainable and understandable for future developers or operators without requiring additional reverse-engineering.
Mateus did an outstanding job on my medium-sized Bubble project. He built a dashboard and a backend that functions seaml…Mateus did an outstanding job on my medium-sized Bubble project. He built a dashboard and a backend that functions seamlessly like a chat system (similar to WhatsApp or an email inbox). His technical skills are excellent, and he was able to figure out even the smallest details—even in areas he hadn’t worked on before.
What impressed me most was his communication: clear, proactive, and always quick to respond. He dedicated full-time focus to my project for a significant period, which made the whole process smooth and efficient.
I couldn’t be happier with the results. Mateus is highly reliable, skilled, and a pleasure to work with. I’d absolutely recommend him to anyone looking for a top-notch Bubble developer.
To client:
5
Working with Till was a fantastic experience. He is clear in communication, highly professional, and makes collaboration…Working with Till was a fantastic experience. He is clear in communication, highly professional, and makes collaboration smooth and enjoyable. Till shows great respect for freelancers’ input and always ensures alignment before moving forward. I truly appreciated his trust and the positive work environment he created. I’d be happy to work with him again anytime and highly recommend him to other freelancers.
n8n Expert for Building a Multi-Channel AI Chatbot (WhatsApp, SMS, Voice) with Supabase Integration
To freelancer:
5
Sergio made a very competent and professional impression. He was quick to understand and solve the problems we discussed…Sergio made a very competent and professional impression. He was quick to understand and solve the problems we discussed, and communication with him was always smooth – both in English and German.
He was responsive, efficient, and reliable throughout our collaboration.
I can highly recommend Sergio for any kind of web or automation-related project like stuff with N8N!
To client:
5
Thank you Till, always a pleasure to work with you. I hope we can collaborate again soon 🙏
Transfer Website and Domain to Separate One.com Hosting Plan (Based on Provided Instructions)
To freelancer:
5
We had to move a complete website including domains to a new web server – and Denis and his team handled everything prof…We had to move a complete website including domains to a new web server – and Denis and his team handled everything professionally and way faster than I expected. Communication was smooth, the process was efficient, and everything worked perfectly. Thank you for the great work – I work with Denis on a couple projects and will absolutely hire him again and highly recommend!
To client:
5
It was a pleasure working on this project! We've already completed several contracts together, and I truly value our lon…It was a pleasure working on this project! We've already completed several contracts together, and I truly value our long-term collaboration. Communication is always clear, tasks are well-defined, and the overall experience is smooth and professional
Implement Custom Tracking Route in
WordPress with Webhook and Redirect
To freelancer:
5
To client:
5
May 2025 - Jun 2025 FIXED $300.00
WordPress Backend Developer Needed: Create Custom Code to integrate BuddyBoss and GamiPress, 2 Tasks
To freelancer:
5
Dennis and his team did an amazing job fixing a WordPress plugin for me. They were highly responsive, fast, and seemed t…Dennis and his team did an amazing job fixing a WordPress plugin for me. They were highly responsive, fast, and seemed to be online whenever I needed them. Their expertise and efficiency made the whole process smooth. Highly recommend their services!
To client:
5
We recently had the pleasure of working with Till. His clear vision and collaboration made it a great experience! Lookin…We recently had the pleasure of working with Till. His clear vision and collaboration made it a great experience! Looking forward to more projects!
Jan 2024 - Feb 2025 15 hrs @ $57.94/hr Billed: $878.83
Übersetzung Englisch -> Deutsch - Persönlichkeitsentwicklung Text
To freelancer:
5
Jun 2020 - Oct 2024 FIXED $1,032.70
Social Media Copy Writing Content Creator | Feinkost & Grillen | Deutsch
To freelancer:
5
To client:
5
Jun 2021 - Oct 2024 FIXED $200.00
Developer needed for Safari Extension using API
To freelancer:
5
Michael is an exceptional Apple developer who exceeded my expectations. He is highly skilled, reliable, always delivers …Michael is an exceptional Apple developer who exceeded my expectations. He is highly skilled, reliable, always delivers on time, and produces high-quality work. His English is excellent, which makes communication very smooth and efficient. I highly recommend him without reservation!
To client:
5
It's been a pleasure working with Till, would accept a new contract in a heartbeat!
I wanted to have a Logo completely rebuild from scratch. Sergiu did it in absolutely no time. We worked together for a c…I wanted to have a Logo completely rebuild from scratch. Sergiu did it in absolutely no time. We worked together for a couple of times now. He always is doing great work.
Mar 2024 - Mar 2024
Digital Marketing Specialist for macOS App Promotion | Paid Ads
To freelancer:
5
I highly recommend Tim Karsin for his expertise in digital marketing, particularly in SEO and SEA, with a focus on Googl…I highly recommend Tim Karsin for his expertise in digital marketing, particularly in SEO and SEA, with a focus on Google platforms. Tim skillfully set up and managed Google Ads, Google Analytics, and Google Tag Manager.
His proficiency in utilizing these tools was impressive, demonstrating his deep understanding of the field. Although our project was prematurely discontinued for reasons unrelated to his performance, Tim's contribution in the setup phase was invaluable.
For anyone seeking a dedicated and knowledgeable digital marketing specialist, especially in Google-related areas, Tim is an excellent choice.
To client:
5
Vielen Dank für die angenehme Zusammenarbeit. Es war mit stets eine Freude :)
Liebe Grüße
Tim Cazin
May 2023 - Jan 2024 9 hrs @ $51.78/hr Billed: $466.01
Fix Small WooCommerce Issue
No feedback given
To client:
5
Great client to work with, highly recommended client on Upwork!
Nov 2023 - Nov 2023 FIXED $35.00
Translation of Graphics Project discussed in Chat
To freelancer:
5
Sergiu helped me before. Today I had a small task but he quickly answered and completed the task within minutes. Thanks!
To client:
5
Oct 2023 - Oct 2023 FIXED $25.00
Create Application Design in Canva
To freelancer:
5
For the, second time I had the pleasure of working with Thanh. Our collaboration was once again efficient and enjoyable.…For the, second time I had the pleasure of working with Thanh. Our collaboration was once again efficient and enjoyable. She expertly assisted me in transferring a complex Microsoft Office Word template into Canva, thereby expanding my editing options. I wholeheartedly recommend Thanh for her exceptional skills and service.
To client:
5
It's always a pleasure to work with Till!
Jul 2023 - Jul 2023 FIXED $25.00
CV for first Company: Inpsyde
No feedback given
To client:
5
Thank you so much.
Dec 2022 - Jun 2023 FIXED $10.25
Graphic Designer Needed for Professional and Minimalist Resume Design in Word
To freelancer:
5
It was a pleasure to work with Thanh on creating a Microsoft Office template for my job applications. Her creativity and…It was a pleasure to work with Thanh on creating a Microsoft Office template for my job applications. Her creativity and attention to detail are truly commendable, and the final product exceeded my expectations. Thanh is a talented designer, delivering top-quality work that truly stands out. She was attentive to my needs, met deadlines promptly, and provided a design that was both professional and unique. I would highly recommend Thanh to anyone in need of superior design services. Her skills and dedication to her craft are apparent in her exceptional output.
To client:
5
Till is a pleasure to work with. He provided clear explanations and helpful feedback throughout the process and had a cl…Till is a pleasure to work with. He provided clear explanations and helpful feedback throughout the process and had a clear understanding of what he wanted. Thank you for the experience.
Dec 2022 - Jun 2023 FIXED $25.00
Graphic Designer for macOS User Interface Illustrations
To freelancer:
5
Thanks for working with you again! Can recommend Sergiu for Graphics related work for UI/UX and Product Design.
To client:
5
Feb 2023 - Jun 2023 10 hrs @ $21.00/hr Billed: $203.00
Video Editor for Apps 30sec Promo Video
To freelancer:
5
I recently had the pleasure of working with Ashka on a promo video project for my app, and I am absolutely thrilled with…I recently had the pleasure of working with Ashka on a promo video project for my app, and I am absolutely thrilled with the results. From the moment I found her on Upwork, I knew she was the right person for the job, and she proved me right with her incredible work.
Ashka diligently followed my instructions and managed to exceed my expectations. Her ability to take my ideas and transform them into a captivating and engaging video was nothing short of remarkable. The video she created truly brought the essence of my app to life and made even the most mundane aspects look exciting.
Throughout the entire process, Ashka remained professional, communicative, and timely. She completed the project within the agreed-upon timeframe, and the outcome was more than satisfactory. Her keen eye for detail and creative flair truly set her apart from other video creators I have worked with in the past.
I wholeheartedly recommend Ashka for anyone looking to turn something ordinary into an extraordinary video. She is a talented, hardworking, and dedicated professional, and I cannot thank her enough for the exceptional work she has done for my app's promo video.
Thank you, Ashka! I look forward to working with you again on future projects.
To client:
5
It was a great experience working with Till! All of the requirements and communication were clear so we can finish this …It was a great experience working with Till! All of the requirements and communication were clear so we can finish this project smoothly. Totally recommended client! Hoping to work with you again in the future.
Mar 2023 - Apr 2023 FIXED $523.50
Redesign WooCommerce Product Tables for Mobile Website
To freelancer:
5
Sabbir put so much work in this whole project, and it really paid off. Thanks to your focus and determination in going t…Sabbir put so much work in this whole project, and it really paid off. Thanks to your focus and determination in going the extra mile and managing all of the complexities of this project, we met our goals.
To client:
5
Nice to work with Till Seyer. The client was responsive to any of my requests for clarification. I hope to have the oppo…Nice to work with Till Seyer. The client was responsive to any of my requests for clarification. I hope to have the opportunity to work with him again.
Jan 2022 - Feb 2022 FIXED $10.00
Redesign WooCommerce Product Tables for Mobile Website
To freelancer:
5
Tanks again for working together again :-) You're pretty easy to work with and communicative about the project. I can to…Tanks again for working together again :-) You're pretty easy to work with and communicative about the project. I can totally recommend you on to other people who look for a professional web developer!
To client:
5
I’ve enjoyed working with you, Seyer. I wish you all the success!
Dec 2021 - Jan 2022 FIXED $40.00
Redesign WooCommerce Product Tables for Mobile Website
To freelancer:
5
Mr Ahmed is a very dedicated web developer trying to get to the desired outcome in the most efficient way. I liked worki…Mr Ahmed is a very dedicated web developer trying to get to the desired outcome in the most efficient way. I liked working with him because his skills to turn my ideals into reality was very spot on. He also is very communicative and easy to work with. His respond time is super fast.
I can totally recommend Mr Ahmed for projects with Wordpress websites and CSS project in general. This was not the last time we have been working together. Thank you for your technical support :-)
To client:
5
An excellent client. I enjoyed working with him. I hope I will have a chance to work with him once again. Thank you for …An excellent client. I enjoyed working with him. I hope I will have a chance to work with him once again. Thank you for the project, Seyer!
Nov 2021 - Nov 2021 FIXED $80.00
Social Media Copy Writing Content Creator | Feinkost & Grillen | Deutsch
To freelancer:
5
Anna hat mir bei meinem Social Media Auftritt zu meiner vollsten Zufriedenheit geholfen. Ihre Aufgabe bestand darin Fach…Anna hat mir bei meinem Social Media Auftritt zu meiner vollsten Zufriedenheit geholfen. Ihre Aufgabe bestand darin Fachliche Beiträge zu schreiben und passend dazu Grafiken anzufertigen.
Sie hat den Job in kürzester Zeit erledigt. Für weitere Anweisungen und Fragen stand sie mir immer zur Verfügung und konnte mir stets weiterhelfen. Das arbeiten mit ihr ist professionell und macht Spaß.
Ich hoffe wir werden auch in Zukunft weiter zusammen arbeiten.
To client:
5
Till war sehr professionell und sehr freundlich. Hat sich immer viel Zeit genommen, um alles genau zu erklären. Das Proj…Till war sehr professionell und sehr freundlich. Hat sich immer viel Zeit genommen, um alles genau zu erklären. Das Projekt hat sehr viel Spaß gemacht und ich würde mich freuen über zukünftige Zusammenarbeit sehr freuen.
Jun 2021 - Jun 2021 FIXED $100.00
New per Hour Contract
To freelancer:
5
His tasks include but are not limited to designing and developing WordPress websites that fit our brand identity, coding…His tasks include but are not limited to designing and developing WordPress websites that fit our brand identity, coding unique solutions according to our needs, managing hosting and database tasks, maintaining and upgrading WordPress websites, and fixing website-related issues.
His designing and developing skill and performance was very satisfactory. He is always willing to persist with the task at hand until complete satisfaction is obtained. I can totally recommend Punit if you have WordPress work for him to do.
Dec 2020 - May 2021 17 hrs @ $10.29/hr Billed: $176.67
GERMAN Videos für Online Kurs Schneiden und Präsentation erstellen
To freelancer:
5
It was a great experience working with Ilana. She helped me in the post-production of a video project for an online cour…It was a great experience working with Ilana. She helped me in the post-production of a video project for an online course. Since good communication in these kinds of projects is necessary for a good result, working with her was flaweless. She always responded rapidly and brought her own creative ideas and touches and found clever ways to implement my visions for the project. I can recommend working with her on professional video projects at any time. Further collaborations with her are already planned. Thanks for working with me, Ilana!
Jan 2021 - Mar 2021 FIXED $100.00
Fixing Mobile Version Issue
To freelancer:
5
Punit helped me out a lot. Thanks!
To client:
5
Till is best client. I enjoyed working on this project. All expectations and requirements were communicated perfectly.
…Till is best client. I enjoyed working on this project. All expectations and requirements were communicated perfectly.
Happy to work with you again in future.
Thanks,
Till
Nov 2020 - Nov 2020 FIXED $5.00
Fixing Mobile Version Issue
To freelancer:
5
I worked with Punit now a couple of times.
Every time he is quick to answer and very good and css and Wordpress itself.
…I worked with Punit now a couple of times.
Every time he is quick to answer and very good and css and Wordpress itself.
He also gives his own and honest opinion when needed.
Happy to work with him again and recommend him to you!
To client:
5
Again great experience! Good client. Thanks Till for give me opportunity to work with on his project.
Nov 2020 - Nov 2020 FIXED $5.00
Flyer and Banner for Gym (Cooperate Design)
To freelancer:
5
Drazen helped me with several designs and graphics projects.
He always handed me the project in time and responded to my…Drazen helped me with several designs and graphics projects.
He always handed me the project in time and responded to my requests fairly quickly.
His work exceeded my expectations both creatively and professionally. You can tell he loves what he does and he is pretty good at it.
Thanks for working with me.
To client:
5
Till is one awesome dude! Professional, on point, very responsive knows what he needs. A real pleasure to work with.
Nov 2019 - Nov 2020 FIXED $427.50
Create Sign Up Form 2 Pages A4 for Gym
To freelancer:
5
Sergiu helped me with several design and graphics tasks.
He always handed me the project in time and responded to my req…Sergiu helped me with several design and graphics tasks.
He always handed me the project in time and responded to my requests fairly quickly.
His work exceeded my expectations. You can tell he loves what he does and he is pretty good at it.
Thanks for working with me.
To client:
5
Dec 2019 - Nov 2020 FIXED $60.00
Change Small Design Issue in Woocommerce Shop
To freelancer:
5
I was very please to work with Punit.
He completed the task that I gave him within the set time period very fast.
After …I was very please to work with Punit.
He completed the task that I gave him within the set time period very fast.
After doing the task he was transparent about what exactly he did and summarised it conveniently.
His quality of work is good, since he did every like I wished. You can tell he is an experience developer in Wordpress.
I can totally recommend him on to you!
To client:
5
It was really nice working with you Till. Instant communication and explain project details very well. We had job done w…It was really nice working with you Till. Instant communication and explain project details very well. We had job done within one day. I will always want to work with you again in future.
Nov 2020 - Nov 2020 FIXED $10.00
Übersetzung Englisch -> Deutsch - Persönlichkeitsentwicklung Text
To freelancer:
5
Thanks Johanna for your great translation.
I can recommend you on because you did a great job in a short period of time.…Thanks Johanna for your great translation.
I can recommend you on because you did a great job in a short period of time.
Awesome!
Jun 2020 - Jun 2020 FIXED $100.00
I need a transcriber for 21:50 min of video
To freelancer:
5
I am fully satisfied with Aleksandar transcription work he did for me.
He was very kind, responsive, and successfully co…I am fully satisfied with Aleksandar transcription work he did for me.
He was very kind, responsive, and successfully completed the task in no time.
I can totally recommend him!
Thanks for working for me Aleksandar.
To client:
5
Readily available and a pleasure to work with, we were able to easily communicate every project detail.
Jun 2020 - Jun 2020 FIXED $7.00
I need a transcriber for 2:50h of video
To freelancer:
4.85
Camilla did a transcription for me here on Upwork. She always responded fast and the results of her work were also great…Camilla did a transcription for me here on Upwork. She always responded fast and the results of her work were also great. I can fully recommend working with her.
Thanks Camilla!
To client:
5
Working with Till hasn't been only a job, but also an opportunity to better my self learning something new and interesti…Working with Till hasn't been only a job, but also an opportunity to better my self learning something new and interesting. I totally recommend him: his directions were clear, and deadlines super-reasonable! thanks!
May 2020 - May 2020 FIXED $50.00
Create modern WordPress Website for a Gym + Beauty Salon + Sauna
To freelancer:
5
You have done a good and quick job helping me out with my website project.
I can recommend you to my friends for being v…You have done a good and quick job helping me out with my website project.
I can recommend you to my friends for being very responsive, fast and having always an unexpected way of design up your sleeve.
Thanks for working together.
To client:
5
Working with Till was a great experience...Reasonable requirements, a lot of understanding and professional approach are…Working with Till was a great experience...Reasonable requirements, a lot of understanding and professional approach are his signature traits. Thank you
Dec 2019 - Jan 2020 38 hrs @ $18.00/hr Billed: $693.00
Simple Design for Invitation
To freelancer:
4.85
Rozalia did a great job creating an invitation fast. She was talented, creative, offered her own ideas.
I was in a hurry…Rozalia did a great job creating an invitation fast. She was talented, creative, offered her own ideas.
I was in a hurry and she completed the design job in a few hours.
She didn't hesitate to create multiple designs for my job to choose from.
Thanks a lot!
To client:
5
We worked well and fast. Responded very well to sugestions. We had a clean collaboration. I would reccomend working with…We worked well and fast. Responded very well to sugestions. We had a clean collaboration. I would reccomend working with him.
Jan 2020 - Jan 2020 FIXED $12.50
Create New Flat 2D Logo for Doctor
To freelancer:
5
Communication with Sergiu was very good. He was always quick polite and easy to talk to.
The work was good. He created…Communication with Sergiu was very good. He was always quick polite and easy to talk to.
The work was good. He created lots of drafts for me until me final build was ready.
Thanks again!!
To client:
5
Till is a diplomatic person.
I had the pleasure of working with him.
Nov 2019 - Nov 2019 FIXED $20.00
Help Needed for Facebook Marketing and Shopify Dropshipping Store
To freelancer:
5
Frederick is a very nice, competent guy.
He over-exceeded my expectations on this job, so I can definitely recommend him…Frederick is a very nice, competent guy.
He over-exceeded my expectations on this job, so I can definitely recommend him to anyone who needs help in the areas of Facebook marketing and marketing strategy in general.
Although he is new to up work, he has plenty of experience with other costumes in the offline world and on other networks.
Thanks for helping me! I will come back to you :)
To client:
5
Great client overall.
He was very nice & I was very happy to work with him.
Communication was top.
I hope to work with h…Great client overall.
He was very nice & I was very happy to work with him.
Communication was top.
I hope to work with him again!
Mar 2019 - May 2019 FIXED $200.00
Create a company brand logo which should look modern, simple, fresh and regional
To freelancer:
5
Danail is a great choice for your graphics project! I found him being always helpful, creative and a great communicator.…Danail is a great choice for your graphics project! I found him being always helpful, creative and a great communicator. I just can recommend him!
To client:
5
Working with Till was amazing! He was very clear about what he wanted and responded quickly.
I would work with him agai…Working with Till was amazing! He was very clear about what he wanted and responded quickly.
I would work with him again!
Join our team as a Web3/Blockchain Engineer to develop decentralized applications and smart contracts. You'll work with Ethereum and EVM-compatible chains, using Solidity and Web3 tools to build secure and scalable blockchain solutions. This role requires experience in smart contract development and blockchain integration, ensuring the reliability and performance of deployed contracts. If you have a passion for blockchain technologies and problem-solving, we'd love to have you on board.
Hourly rate:
20 - 80 USD
21 hours ago
Web, Mobile & Software Dev, Other - Software Development
Reverse Engineering NFC-Based Mobile App API Requests (Urgent, High Budget)
Applied
not specified
21 hours ago
Client Rank
- Medium
Payment method verified
Phone number verified
$647 total spent
2 hires
6 jobs posted
33% hire rate,
1 open job
5.00
of 2 reviews
Registered: Sep 3, 2024
Turkey
Istanbul
20:21
3
I am looking for an experienced reverse engineer / mobile security expert to help analyze API requests triggered by NFC card scans in a mobile application.
I have already successfully identified and decoded several API requests within the app using reverse engineering techniques. However, I am currently unable to resolve the NFC card scanning flow, specifically:
How NFC card data is processed inside the app
How and when API requests are generated after an NFC scan
The overall NFC communication and request-generation logic
What I Need Help With
Analyzing NFC-related logic within Android/iOS applications
Identifying API requests sent after NFC card scans
Understanding the NFC data flow and request structure
Assisting with debugging, decryption, or protocol analysis if applicable
Required Skills
Strong experience in reverse engineering mobile applications
Deep understanding of NFC (ISO 14443 / ISO 15693 / Host Card Emulation, etc.)
Experience with Android (Java/Kotlin, Smali) and/or iOS (Swift/Obj-C)
Familiarity with tools like Frida, Burp Suite, JADX, IDA, Ghidra
Mobile API traffic analysis
Important Notes
This project is urgent
High budget available for the right expert
Prior experience with NFC-based systems is a strong plus
Clear communication and fast turnaround are expected
If you have worked on similar NFC or mobile reverse engineering projects before, please include examples or a brief explanation of your experience.
Looking forward to working with an expert who can move quickly.
Budget:
not specified
21 hours ago
Client's recent history (3 works)
Urgent: Skilled Flutter Developer Needed to Convert 20-Page Figma Design to Clean UI Code
To freelancer:
5
He helped me thank you so much
To client:
5
Sep 2025 - Oct 2025 FIXED $500.00
Urgent: Skilled Flutter Developer Needed to Convert 20-Page Figma Design to Clean UI Code
No feedback given
To client:
5
Jake Bentz! Great client with excellent communication. I really appreciate his professional QA-style testing and clear f…Jake Bentz! Great client with excellent communication. I really appreciate his professional QA-style testing and clear feedback. Would be glad to work with him again.
Aug 2025 - Sep 2025 FIXED $100.00
Urgent: Skilled Flutter Developer Needed to Convert 20-Page Figma Design to Clean UI Code
Job update: Previously I posted a job that was somewhat confusing, so I had to repost it, and find the right candidate for this task:
Project Overview: I am seeking a highly skilled Mechanical or Automotive CAD Engineer to transform a reverse-engineered 3ds Max mesh of a multi-piece rally spoiler into a manufacturing-ready parametric solid model (STEP/IGES). The project is for a 2022+ Subaru WRX (VB).
The Assembly
The spoiler consists of 4 main components that must be modeled as a master assembly:
Bottom Deck: Must include internal pockets for metal hardpoints and be optimized for trunk fitment.
Top Deck: Aerodynamic profile with 5 bonded vortex fins.
Side Plates (x2): Structural plates connecting the decks via a secure male/female insert system.
Technical Requirements
Design Optimization: The provided 3ds Max mesh is for proportional reference only. You are required to use provided high-res reference photos to optimize the surface flow, ensuring "bone lines" and curvatures match the original rally part.
Class-A Standards: Rebuild the mesh into clean parametric geometry with G2/G3 surface continuity.
Composite Strategy: The final part will be a carbon fiber skin over a CNC-milled core. You must account for appropriate surface offsets (approx. 1mm) and draft angles.
Hardpoint Engineering: Design internal pockets for aluminum inserts. You are expected to determine the optimal insert dimensions and bonding tolerances (glue gaps) for structural integrity at high speeds.
Assembly Logic: Side plates must utilize a robust insert system into the decks. Include subtle placement recesses on the top deck for the 5 vortex fins.
Project Phases
Phase 1: Rebuild visual assembly from mesh/photos. Finalize insert logic and surface quality.
Phase 2: Integrate 3D scan data (STL) of the WRX trunk to finalize the bottom deck mating surface and mounting points.
Deliverables
Master Assembly (STEP) and individual files for CNC/Waterjet.
STL "Test Fit" File: A thin-wall prototype file for 3D printing.
2D Technical Drawings: Specifying tolerances, threads, and material callouts.
Surface Analysis: A Zebra-Stripe/Curvature report verifying Class-A quality.
We’re looking for a results-obsessed Meta Ads Copywriter for our horseback riding school (Avatar: Women 30yo-55yo, wanting to do horseback riding lessons) who can take what’s already working and make it work even better.
You will be given access to our top-performing Meta ads and asked to recreate, iterate, and improve them — not reinvent the wheel. The goal is simple: high-performing ads with strong return on ad spend (ROAS).
If you love reverse-engineering winning ads, writing clear and persuasive scripts, and optimizing for performance over ego, this role is for you.
Responsibilities
Write 10 Meta ad scripts per week (primarily video scripts, hooks, body copy, and CTAs)
Anthony is a very well spoken fantastic professional. He helped immensely, and I learned a lot from him. Looking forward…Anthony is a very well spoken fantastic professional. He helped immensely, and I learned a lot from him. Looking forward to working with him again, and I highly recommend.
To client:
4.8
Greatly enjoyed working with Pablo, innovating and reengineering the riding school model isn’t easy but Pablo has great …Greatly enjoyed working with Pablo, innovating and reengineering the riding school model isn’t easy but Pablo has great vision and the tenacity to make it a reality.
I’d be delighted to work with Pablo and the team again.
Pablo is very passionate about his business but also friendly and open when communicating his thoughts. It was a pleasur…Pablo is very passionate about his business but also friendly and open when communicating his thoughts. It was a pleasure working with Pablo to develop a plan to get his business back on track to where he wants it to be.
I need a security-minded experienced and professional developer who can build a robust licensing subsystem for my commercial Windows application. The codebase mixes Python and C++, so I want the licensing layer written in both languages where each makes the most sense: the Python logic must be natively compiled with Nuitka, while the performance-critical checks live in a compact C++ DLL.
Core requirements
The module has to create, encrypt, and validate licence files that are permanently bound to a machine’s HWID. All licence data should be signed and verified with RSA, and any attempt to alter an issued licence or patch the binary must be detected instantly and cleanly shut the application down.
Implementation notes
• Python pieces must be compiled with Nuitka to harden them against decompilation.
• C++ components should expose a minimal public API for the Python layer.
• Tamper detection must run both at start-up and periodically while the program is live.
• The subsystem must work on Windows 10/11 (x86-64).
Deliverables
• Licence generator CLI (Python/Nuitka executable).
• Runtime validation DLL plus thin Python wrapper.
• Complete source with build scripts for both languages.
• Integration guide that shows how to call the validator from my existing app.
Acceptance criteria
• A licence signed on machine A refuses to activate on machine B.
• Any byte-level change to the DLL or compiled Python shuts the app down gracefully.
• Unit tests demonstrate correct RSA signing/verification and HWID matching.
• All deliverables build and run on a clean Windows VM using only the provided scripts.
If you have deep & professional experience in C++, Python, RSA cryptography, and low-level Windows security, I’m ready to start right away and will happily answer any technical questions you have.
Skills: C Programming, Python, Software Architecture, Cryptography, C++ Programming, Windows API, Encryption, Reverse Engineering
Fixed budget:
1,500 - 3,000 USD
1 day ago
Websites, IT & Software, Engineering & Science, Sales & Marketing, Python, Software Architecture, C++ Programming, Windows API, Cryptography, Encryption, Reverse Engineering
Project Title: AI-Based Smart Shoplifting Detection System Role: AI & Full-Stack Developer (Remote Implementation)
1. Project Overview
We are building a smart surveillance system that uses Edge AI to detect shoplifting in real-time. The system runs locally on an NVIDIA Jetson Orin Nano, processes video feeds from an NVR/existing cameras, and upon detecting a theft, instantly sends a 20-second video clip to a mobile app.
We require a developer to build the software stack, implement the system remotely, and optimize the AI models to achieve a minimum of 85% detection accuracy in addition to be teachable and self learnable and improvable.
2. System Architecture & Components
• Hardware (Provided by Client):
o NVIDIA Jetson Orin Nano (Edge Processing).
o NVR with RTSP streams.
o Existing IP/CCTV Cameras (Various brands).
• Software (To be developed by You):
o Edge AI Module: Computer vision model running on Jetson Orin Nano.
o Mobile App: For receiving alerts and viewing clips.
o Web Dashboard: For managing multiple systems/locations.
3. Detailed Scope of Work (Deliverables)
A. Edge AI Development (Jetson Orin Nano)
• Develop and deploy a computer vision model optimized for the Jetson Orin Nano .
• Functionality:
o Ingest RTSP streams from the NVR/Cameras.
o Detect shoplifting behaviors (e.g., concealing items, irregular movements).
o Clip Generation: Automatically cut a 20-second video clip (approx. 5s before event + 15s after) the clip size should be compresses in order to quick transmitting.
o Select the needed cameras: not all the cameras in the network should be in the system , the system should support selecting only needed Ips or the number of camera.
o The system must not be static; it must improve based on the Manager's feedback from the Mobile App but this improving should be only locally and doesn’t affect in other branches or brnads. This is due to different policies in every market (some branches account hiding in the private bag as a theft while others not. So the feedback improving should be only locally.
• Security: The source code deployed on the Jetson must be fully encrypted/obfuscated to prevent reverse engineering.
• Quick and teachable : The clip should be sent to the mobile app within 10s or less with tag right alert/false alert to accept the feedback and improve the response.
• Controlled : Runing the system should be controlled by the main dashboard in addition to archiving all the history in that dashboard.
B. Mobile Application (iOS & Android)
• Develop a secure mobile app for the multi–Store Manager.
• Features:
o Receive real-time push notifications of theft incidents.
o Play the specific 20-second evidence clip received from the local system.
o Notifications should be sent within max 10s and it must include two separate buttons with different colors right alert (green) / false alert (red).
o Running the app should be according to right user and password and should be activated or deactivated from the main dashboard.
o Alert the admin if a camera stream is lost or show the connected to system cameras status.
C. Central Web Dashboard
• Develop a web-based main dashboard to observe multiple systems.
• Features:
o Status monitoring (Online/Offline) of the Jetson devices.
o Incident logs according to the branch and name of the market
o The system should support unlimited branches , the system should be adding according to the following tree and data (brand name => branch name => location address)
o Managers feedback to monitoring the efficiency of system in every branch as a gaph and numeric data
o User Access: A table of App Users with "Enable/Disable" toggles. Revoking access stops alerts to that phone immediately.
o • System Toggle: A switch to Remotely Activate/Deactivate the AI processing on the Jetson (e.g., during store closing hours).
o • support creating main dashboard users with selected branch monitoring .
D. Remote Implementation & Configuration
• Since this is a remote contract, you are responsible for:
o Providing a guide and training for the initial hardware setup.
o Remotely accessing the Jetson device (via SSH, VPN, or remote desktop tools) to install dependencies, deploy the code, and configure the camera streams.
o Troubleshooting connection issues between the NVR/cameras and the AI module remotely.
4. Performance & Acceptance Criteria
The project will only be considered complete upon meeting the following criteria:
1. Accuracy Guarantee: The system must achieve a minimum firstly 85% accuracy rate in detecting shoplifting events during the testing phase. You are expected to fine-tune the model thresholds to balance False Positives and False Negatives.
2. Latency: The alert and video clip must be received on the mobile app within reasonable latency (near real-time) after the event occurs.
3. Security: Verification that the deployed code is encrypted and cannot be easily accessed or copied from the hardware.
Summary of Acceptance Criteria for the Developer
1. Accuracy: >85% (validated by Manager Feedback).
2. Speed: <10 seconds from event capture to App Alert.
3. Control: Dashboard must successfully Pause/Resume the remote hardware.
4. Feedback: App must successfully send "Correct/Wrong" tags to the database.
5. Security & IP Protection (Strict)
To prevent theft of the code and AI models, the following protections are required:
Code Compilation: No raw Python (.py) files. All code must be compiled (e.g., Cython to .so binaries).
Disk Encryption: The Jetson's storage must use LUKS Full Disk Encryption.
Hardware Locking: The software must verify the device's Unique Hardware ID/Serial Number at startup. If copied to another board, it must fail to run.
6. Milestones & Payment Schedule
Phase 1: Mobilization & System Architecture (20%)
• Deliverables:
o Final Technical Design Document (System Architecture & Data Flow).
o Setup of the Cloud Infrastructure (Server/Database).
o Establishment of Remote Connection to the Jetson Hardware.
o Successful ingestion of RTSP streams from NVR/Cameras into the Jetson.
• Payment Trigger: demonstration of camera feed access on the Jetson.
Phase 2: MVP Development (Core Pipeline) (20%)
• Deliverables:
o Edge AI: Basic model deployment detecting "Person" and "Motion" on the Jetson.
o Mobile App: Beta version released (iOS/Android) capable of receiving a push notification.
o Pipeline Test: Proof that a triggered event sends a video clip to the phone (regardless of accuracy or speed at this stage).
• Payment Trigger: Video evidence of a "Detection -> Notification -> Video Playback" loop.
Phase 3: Advanced Features & Security Implementation (30%)
• Deliverables:
o Latency Optimization: Achieving the <10-second alert speed.
o Dashboard Control: Implementation of the "Kill Switch" and User Management.
o Self-Teaching: "True/False" feedback buttons functional and logging to the database.
o Security: Implementation of Code Compilation (Cython) and Disk Encryption.
• Payment Trigger: Demonstration of the "Kill Switch" working instantly and verification of encrypted code.
Phase 4: Optimization, Accuracy & Final Handover (30%)
• Deliverables:
o Accuracy Tuning: Fine-tuning the model to achieve >85% accuracy on live store data.
o Stress Testing: System stability test (running 48 hours without crash).
o OTA Update Test: Successful remote push of a new model version.
o Documentation: User Manuals and Admin Guides.
• Payment Trigger: Final Acceptance Sign-off confirming 85% accuracy and full system stability for 48 hours.
Notes :
1- It will be a specialized third party auditing the deliverable quality.
2- There is an attached file has more information about the project.
Skills: Mobile App Development, Web Development, Full Stack Development, Security, Video Processing, Computer Vision, Deep Learning, AI Development
Fixed budget:
250 - 550 USD
1 day ago
Websites, IT & Software, Mobile Phones & Computing, Engineering & Science, Web Development, Full Stack Development, Computer Vision, Editing, Security, Video Processing, Mobile App Development, Deep Learning, AI Development
Integrate Multiple Biometric Sensors (USB + BLE) into Replit-Based Muscle Testing Web App
Applied
$15 - $55
/ hr
1 day ago
Client Rank
- Excellent
Payment method verified
$32 136 total spent
103 hires, 16 active
104 jobs posted
99% hire rate,
1 open job
19.19 /hr avg hourly rate paid
629 hours paid
4.99
of 102 reviews
Individual client
Registered: Dec 9, 2017
United States
Manhasset
00:21
5
Job Summary
We are looking for a developer to create compliant integrations between various biometric sensor devices and our web-based muscle testing application hosted on Replit. These devices include a USB-connected polygraph as well as other physiological and movement-based sensors, such as heart rate monitors, GSR sensors, respiration belts, force sensors, and IMUs. The goal is to stream these devices' real-time data into the Replit-hosted app using WebUSB, Web Serial, or Web Bluetooth protocols. All integrations must rely on documented APIs, BLE profiles, or vendor-approved methods. Reverse engineering or software tampering is strictly prohibited.
Responsibilities
- Device Interface Integration: Use official protocols (USB Serial, HID, BLE GATT) or published APIs to access sensor data. Devices could include:
--USB Polygraph device (GSR, heart rate, etc.)
--Movesense IMU (BLE)
--MetaMotionR / MetaWear BLE IMU
--Adafruit Feather + BNO055 IMU over BLE
--SparkFun 9DoF Razor IMU + Artemis BLE board
--Generic BLE respiration belts or stretch sensors
--Bluetooth-enabled GSR sensors (e.g. Grove GSR with BLE module)
--BLE HRM devices (e.g. Polar H10, Movesense HR+)
--USB or BLE force sensors / handheld dynamometers
-Data Streaming to Web App: Build client-side integrations (via Web Bluetooth/USB/Serial) or, if needed, a small cross-platform desktop bridge to pass sensor data to the web frontend (e.g. using WebSockets). Ensure real-time or near real-time communication and JSON data formatting.
-Signal Capture & Formatting: Each sensor stream must be captured, parsed, and structured consistently so that our app can use the data as part of a broader muscle-testing or subconscious response engine.
-Documentation & User Setup: Provide documentation for each device integration, including setup instructions, browser/device permissions, BLE pairing steps, and fallback methods.
Project Background
Our app helps practitioners conduct muscle testing and subconscious response sessions. We are upgrading the system to support physiological input via connected biometric sensors to provide objective insights alongside user interaction.
The app is hosted on Replit and must support browser-native access to client devices when possible. For sensors that don’t support WebUSB/Serial/Bluetooth directly, a small companion bridge may be acceptable.
Skills & Qualifications
-Hardware-software integration experience (USB, BLE, GATT, Serial)
-Experience with Web Bluetooth, WebUSB, and/or Web Serial APIs
-Proficient in JavaScript and optionally Python/Node.js for fallback bridges
-Familiar with browser permissions, device access, and BLE service mapping
-Experience parsing data from physiological sensors (e.g. HR, GSR, IMU, respiration)
-Ability to document device setup and guide users through pairing or configuration
Deliverables
1. Web-compatible integrations (via JS or external helper) for each sensor type
2. Unified interface or message bus to standardize data collection across devices
3. Source code and implementation notes
4. User documentation for each supported device, covering setup and usage
5. Confirmation that integration methods comply with vendor terms and browser/device standards
This is a pioneering project to bring real-time subconscious signal processing into a web-based muscle testing workflow. If you’re a developer who thrives on interfacing devices with web tech, we’d love to hear from you!
Client's questions:
Describe your recent experience with similar projects
Investor Deck Designer for Agri-Food Development Project (Montana)
No feedback given
Oct 2025
Edit AI generated video
No feedback given
Jul 2025
Install embedded shopify theme, plug into printify and place given content inside
No feedback given
Jul 2025 FIXED $250.00
Edit photos of models and the merchandise they are wearing for shopify/printify store
No feedback given
Apr 2025 FIXED $731.50
shirt graphic for ecommerce store
No feedback given
Dec 2024
Brooklyn Landmarks Graphics
No feedback given
Dec 2024 93 hrs @ $26.41/hr Billed: $2,460.68
🎨 Designer Needed to Create Social Media Graphics for Lending Programs (Brand-Driven, PSD Format)
No feedback given
To client:
5
Great customer, very happy to work with!
Sep 2025 - Dec 2025 FIXED $50.00
Redesign and Clean Up Real Estate Lending Flyer (PSD/AI)
No feedback given
To client:
5
Great customer, very happy to work with him again!
Aug 2025 - Dec 2025 FIXED $80.00
Add Headless CMS (Sanity) to Mercury Advisors Website
No feedback given
To client:
5
Sep 2025 - Nov 2025 FIXED $416.29
Design a 33” x 80” Retractable Banner (Bold Yellow, Black Text, Minimalist)
To freelancer:
5
SecurityX is a complex brand and concept that Tahir understood right away. I commend him for his work on this project an…SecurityX is a complex brand and concept that Tahir understood right away. I commend him for his work on this project and look forward to bringing him more such brands!
To client:
5
Very nice client, a pleasure to work with!
Sep 2025 - Oct 2025 FIXED $70.00
Additional 2 pages on Shopify site with content swap
To freelancer:
5
Anil has done an amazing job adding these additional pages; he has shown tremendous patience with all of the changes I h…Anil has done an amazing job adding these additional pages; he has shown tremendous patience with all of the changes I have requested and made everything look incredible. Thank you Anil!
To client:
5
Jul 2025 - Oct 2025 FIXED $150.00
Redesign & Polish Investor Pitch Deck for SecurityX
To freelancer:
5
Tahir showed his skills yet again with a beautiful deck for a unique company with a very specific brand identity. the fi…Tahir showed his skills yet again with a beautiful deck for a unique company with a very specific brand identity. the final piece is pleasing to the eyes and functional for investors.
To client:
5
Always a pleasure to work with him!
Oct 2025 - Oct 2025 FIXED $250.00
Add Headless CMS (Sanity) to Diamond Warranty Website
To freelancer:
5
Ahsan did a phenomenal job bringing this website back from the dead. Previously, the developer dissapeared and I couldn'…Ahsan did a phenomenal job bringing this website back from the dead. Previously, the developer dissapeared and I couldn't access anything. Ahsan built it back again from scratch in a pixel perfect way and was also add in a layer of editability through a CMS that didn't even exist before that. Thanks so much Ahsan!
To client:
5
Working with Alexander on integrating Sanity (Headless CMS) into the Diamond Warranty website was a seamless experience …Working with Alexander on integrating Sanity (Headless CMS) into the Diamond Warranty website was a seamless experience from start to finish. His communication was clear, his technical understanding was impressive, and he provided detailed feedback that helped maintain efficiency throughout the project. Alexander’s collaborative approach made it easy to deliver a smooth CMS integration aligned with his brand’s structure and content goals. I’d be glad to work with him again on future enhancements or similar headless CMS implementations.
Sep 2025 - Oct 2025 FIXED $550.00
Social Designer — Quick Refresh of “Deals of the Week” Post
To freelancer:
5
Tahir continues to show his versatility with branding, white-labeling, and co-branding across different assets and proje…Tahir continues to show his versatility with branding, white-labeling, and co-branding across different assets and projects. I am happy to work with someone who understands those complexities.
To client:
5
Again, nice experince working with Alexander!
Sep 2025 - Oct 2025 FIXED $50.00
Design a Double-Sided Investment One-Pager (Security Tech Startup)
To freelancer:
5
Tahir went above and beyond on this project. The timeling was tight and he still came up with a very high quality produc…Tahir went above and beyond on this project. The timeling was tight and he still came up with a very high quality product that could be sent directly to the printer!
To client:
5
One of the best customers I’ve ever worked with, incredibly polite and professional throughout.
Sep 2025 - Sep 2025
Social Designer — Quick Refresh of “Deals of the Week” Post
To freelancer:
5
Tahir completely upgraded the look of this Law Firm's marketing material without disrupting the brand. The piece was use…Tahir completely upgraded the look of this Law Firm's marketing material without disrupting the brand. The piece was used almost immediately after it was created we were so sure on it!
To client:
5
Great customer, very happy to work with him!
Sep 2025 - Sep 2025 FIXED $65.00
Need Printify Consultant with design experience to help me improve my store
To freelancer:
5
Rahat did a great job creating very unique items for this store that I never even thought about!
Vadym is a stellar developer. He was able to resuscitate my website from the dead after a developer disappeared. He work…Vadym is a stellar developer. He was able to resuscitate my website from the dead after a developer disappeared. He worked hard to make sure the product that we ended up with was functioning better than the one that existed before. Thanks Vadym!
To client:
5
Aug 2025 - Sep 2025 FIXED $350.00
Vectorize a logo from an image manually (without autotrace)
To freelancer:
5
Tahir took a very complex logo that was originally created elsewhere and was only available in PNG format and turned it …Tahir took a very complex logo that was originally created elsewhere and was only available in PNG format and turned it into a fully editable raw design file that I could now print on anything. Very quality work!
To client:
5
Great client to work with! Clear communication and quick feedback made the process smooth. I recreated their logo in vec…Great client to work with! Clear communication and quick feedback made the process smooth. I recreated their logo in vector format, and everything went seamlessly. Would gladly work with them again!
Ahsan did an absolute perfect job on this. I was really impressed with his professionalism, promptness and the comprehen…Ahsan did an absolute perfect job on this. I was really impressed with his professionalism, promptness and the comprehensive approach to the project with step by step instructions! Ahsan is a wonderful freelancer.
To client:
5
I have truly enjoyed working with Alex. He is a very kind, respectful, and supportive person who values clear communicat…I have truly enjoyed working with Alex. He is a very kind, respectful, and supportive person who values clear communication and collaboration. Working with him has been a smooth and positive experience from start to finish. I would highly recommend every freelancer to work with Alex if they get the chance — he is a wonderful client and a pleasure to work with.
Vadym did an amazing job replicating this website. It was a smooth and straight forward process tha twas done in record …Vadym did an amazing job replicating this website. It was a smooth and straight forward process tha twas done in record time. I would gladly work on a project with them today.
To client:
5
Alexander was excellent to work with. Clear scope and assets from day one, fast decisions, and thoughtful feedback. We l…Alexander was excellent to work with. Clear scope and assets from day one, fast decisions, and thoughtful feedback. We launched the site on Vercel and handled DNS without issues; payment was prompt. Professional, communicative, and respectful of timelines. I’d gladly work with Alexander again.
Aug 2025 - Aug 2025 FIXED $350.00
Spin off current logo into a different logo for an affliated organization
To freelancer:
5
Tahir did an amazing job both recreating as well as refining and updating the current logo to be print ready.
The final…Tahir did an amazing job both recreating as well as refining and updating the current logo to be print ready.
The final logo is something that can be used digitally and on all sorts of other mediums in a lot of different colors.
Thanks Tahir for your great work!
To client:
5
Great experience! Alexander was responsive, easy to work with, and appreciative of the creative process. I really enjoye…Great experience! Alexander was responsive, easy to work with, and appreciative of the creative process. I really enjoyed designing the logo and would gladly work with them again.
Jul 2025 - Aug 2025 FIXED $40.00
Vectorize a logo from an image manually (without autotrace)
To freelancer:
5
Tahir not only vectorized this logo, he enhanced it! He also did it on a very short timeline. Always appreciate working …Tahir not only vectorized this logo, he enhanced it! He also did it on a very short timeline. Always appreciate working with Tahir!
To client:
5
Very nice client!
Jul 2025 - Jul 2025 FIXED $20.00
Edit AI generated video to remove bug on models upper right shoulder
To freelancer:
5
Oleksandr was incredibly easy and fast to work with. He turned around this project in less than a day and with a great r…Oleksandr was incredibly easy and fast to work with. He turned around this project in less than a day and with a great result.
To client:
5
Recommended employer!
Jul 2025 - Jul 2025 FIXED $40.00
Help me delete my workspace account (and google cloud instance) on zoom call
To freelancer:
5
Jose was fantastic. He was able to get this job done very efficiently and quickly! He was easy to work with and talk to …Jose was fantastic. He was able to get this job done very efficiently and quickly! He was easy to work with and talk to as well.
To client:
5
Alexander is a great client to work with, clear requirements and all good in general. Thank you.
Jul 2025 - Jul 2025 FIXED $20.00
Design a landing page to promote an investment and capture lead information
To freelancer:
5
Oksana is a very talented designer and I recommend her to anyone looking for an LP designer on the platform.
To client:
5
Mar 2025 - Jun 2025 FIXED $200.00
Turn Deck into one-pager
To freelancer:
5
Kainat's one pager was beautifully designed! She incorporated all requests in feedback smoothly and with quick turn arou…Kainat's one pager was beautifully designed! She incorporated all requests in feedback smoothly and with quick turn around
To client:
5
It was a pleasure working with Alexander, very organized and professional. I look forward to another opportunity to work…It was a pleasure working with Alexander, very organized and professional. I look forward to another opportunity to work with him.
Mar 2025 - Jun 2025 FIXED $175.00
Headless CMS Support and Maintenance (Strapi + Next.js)
No feedback given
Aug 2024 - May 2025 61 hrs @ $26.52/hr Billed: $1,617.82
Upgrade the design of presentation deck
To freelancer:
5
Juan did a great job with this deck!
To client:
5
Mar 2025 - Apr 2025 FIXED $75.00
Photoshop my clothing onto a photo of a model (without AI)
To freelancer:
5
Jason was able to do an incredibly complex design job very well! He used tremendous skill and tenacity to produce an awe…Jason was able to do an incredibly complex design job very well! He used tremendous skill and tenacity to produce an awesome final result. The designs that he created are already currently being used on my shopify website to sell clothing.
If anyone wants a hard working freelancer that delivers what you're asking for- Jason is the guy you're looking for!
To client:
5
Alexander is a great client. Very clear instructions and not micromanaging.
Very considerate and patient! Surely will w…Alexander is a great client. Very clear instructions and not micromanaging.
Very considerate and patient! Surely will work for him in the future if needed and will recommend working for him,
Apr 2024 - Apr 2025 FIXED $424.00
Update Set of renderings, drawings and visualization (floorplans, elevations + interior/exterior)
To freelancer:
5
Juned was able to get all of these updates done in record time! The quality remains to be great, and Juned is incredibly…Juned was able to get all of these updates done in record time! The quality remains to be great, and Juned is incredibly communicative about timeframes, expectations and updates. I look forward to our next project.
To client:
5
Alexander is a fantastic client to work with! He clearly communicates what he needs, ensuring a smooth workflow. Always …Alexander is a fantastic client to work with! He clearly communicates what he needs, ensuring a smooth workflow. Always clear and professional, making the collaboration a pleasure. Would love to work together again!
Mar 2025 - Mar 2025 23 hrs @ $21.31/hr Billed: $479.43
Redesign and resize a book cover that was originally designed for bigger size
To freelancer:
5
Tahir did a perfect job on this task. I couldn't have asked for a better freelancer to resize and redesign this book. H…Tahir did a perfect job on this task. I couldn't have asked for a better freelancer to resize and redesign this book. He got it done ASAP at an extremely high quality.
To client:
5
Great client!
Mar 2025 - Mar 2025 FIXED $127.72
Use a presentation to create company style guide
To freelancer:
5
I have had many style guides done in the last 10+ years, and Murad's is by far the best quality I've ever been delivered…I have had many style guides done in the last 10+ years, and Murad's is by far the best quality I've ever been delivered. Kudos to Murad and his quality of work. I plan on working with him again.
To client:
5
It was my pleasure working with you!
Mar 2025 - Mar 2025
Put together a visualization of a house based on already created 3d renderings
To freelancer:
5
This walkthrough of a house design had a "wow factor" that pleased my client very much. Tremendous job Juned!
To client:
5
I had a positive experience working with Alexander on this project. While I ended up completing the work, the collaborat…I had a positive experience working with Alexander on this project. While I ended up completing the work, the collaboration was smooth, and communication was professional. Wishing him the best in his future projects.
Mar 2025 - Mar 2025 13 hrs @ $21.49/hr Billed: $268.57
3-D renderings of residential front and rear elevation
To freelancer:
5
Even without a lot of direction, Juned was able to create and imagine a beautiful 3d rendering of a theoretical house! H…Even without a lot of direction, Juned was able to create and imagine a beautiful 3d rendering of a theoretical house! He even included (area appropriate) landscaping as well, which was a nice surprise.
To client:
5
Well-managed and productive collaboration, with Alexander providing great support and clarity.
Mar 2025 - Mar 2025 5 hrs @ $22.08/hr Billed: $110.42
Create 3-D & 2-D renderings of residential interior floor plans
To freelancer:
5
The renderings are exactly what I was asking for and mimic the handwritten plans that were sent through less than 24 hou…The renderings are exactly what I was asking for and mimic the handwritten plans that were sent through less than 24 hours ago. Great job Juned!
To client:
5
Alexander is a great client—professional, communicative, and easy to work with. Would love to collaborate again!
Mar 2025 - Mar 2025 5 hrs @ $22.08/hr Billed: $110.42
Modify and improve architectural drawings for a house knock-down project
To freelancer:
5
The architectural drawings that Juned was able to put together from a paper drawing is very impressive. I've been happy …The architectural drawings that Juned was able to put together from a paper drawing is very impressive. I've been happy to work with Juned on this project together. I appreciate the attention to detail!
To client:
5
Working with Alexander was seamless. He provided clear directions and quick responses, making the project efficient and …Working with Alexander was seamless. He provided clear directions and quick responses, making the project efficient and enjoyable!
Mar 2025 - Mar 2025 4 hrs @ $22.34/hr Billed: $89.34
Create 3-D & 2-D renderings of residential interior floor plans
To freelancer:
5
Juned did it yet again- he delivered a quality product in a reasonable amount of time. His submissions of the interior d…Juned did it yet again- he delivered a quality product in a reasonable amount of time. His submissions of the interior drawings were spot on and high fidelity!
To client:
5
Alexander is a fantastic client—clear, professional, and easy to work with. Always a smooth experience!
Mar 2025 - Mar 2025 5 hrs @ $22.08/hr Billed: $110.42
3-D renderings of residential front and rear elevation
To freelancer:
5
Well done Juned! All of the angles of the 3D model of the existing property are beautiful and accurate.
To client:
5
Another great project with Alexander! Clear communication and a smooth workflow as always.
Mar 2025 - Mar 2025 5 hrs @ $22.08/hr Billed: $110.42
Reverse Engineer Sketchup drawing of house and convert it into architectural blueprint
To freelancer:
5
Juned is a star freelancer! He was able to turn a complex task into a simple one in a short period of time. He did what …Juned is a star freelancer! He was able to turn a complex task into a simple one in a short period of time. He did what i asked perfectly.
To client:
5
Alexander was clear with his requirements, provided timely feedback, and communicated professionally. A great client to …Alexander was clear with his requirements, provided timely feedback, and communicated professionally. A great client to work with!
Mar 2025 - Mar 2025 FIXED $220.00
Remove all text from workbook
To freelancer:
5
Muhammad did a great job bringing this project to completion. Even after a few changes we were able to get exactly what …Muhammad did a great job bringing this project to completion. Even after a few changes we were able to get exactly what we both wanted! Great job.
To client:
5
Thanks
Dec 2024 - Jan 2025 10 hrs @ $4.72/hr Billed: $47.16
3D Designer/Interior Architect Needed to Convert a 15' x 15' Room into a Cozy Apartment
To freelancer:
5
Maria did an amazing job bringing this project to fruition! From the onset, she was very focused and inspired to create …Maria did an amazing job bringing this project to fruition! From the onset, she was very focused and inspired to create the best possible outcome.
The final product is fantastic and is perfect to share with others to actually do the construction and buy the products that will go inside.
To client:
5
Alex communicates clearly and knows exactly what he needs. He provides detailed project information, which has been inva…Alex communicates clearly and knows exactly what he needs. He provides detailed project information, which has been invaluable in guiding the process. His clarity and organization make collaboration smooth and efficient—I’d work with him again in a snap!
Oct 2024 - Oct 2024 46 hrs @ $13.87/hr Billed: $642.57
Use figma design to develop website (for youtube/tiktok/instagram channel)
To freelancer:
5
Omar has been a fantastic freelancer to work with. So much so, that I have already decided to another job with him. His …Omar has been a fantastic freelancer to work with. So much so, that I have already decided to another job with him. His work speaks for itself and I encourage others to talk to him and look at his portfolio. He was very responsive the entire project and pivoted several times (in a solution based way) to meet the milestones we jointly set to achieve for this final website. I really recommend him to anyone who wants an amazing and beautiful interactive website.
To client:
5
Working with Alex was a great experience. His effective communication and deep knowledge made collaboration smooth. With…Working with Alex was a great experience. His effective communication and deep knowledge made collaboration smooth. With agile approach, we quickly implemented new ideas, enhancing the product significantly.
Apr 2024 - Sep 2024 FIXED $4,999.98
Adding Cart screen and checkout screens to existing figma design
To freelancer:
5
The extra screens I requested from the first job were really well done. Thanks so much for being responsive and collabor…The extra screens I requested from the first job were really well done. Thanks so much for being responsive and collaborative on this!
I have a Windows application written in C# that was protected with Themida. The original source is lost, so I need the executable unpacked and its codebase reconstructed into a clean Visual Studio solution I can compile and extend.
My sole objective is to extract and reuse code components. In practice this means recovering:
• Business logic classes, algorithms and supporting helpers
• User-interface elements (forms, XAML, resources and event wiring)
I’m not looking for detailed documentation—just working, readable code arranged in an orderly project tree.
Deliverables
• Visual Studio–ready solution (.sln) that builds without errors
• Separate folders for the recovered business logic and UI components
• Brief read-me noting any external dependencies or special build steps
Acceptance criteria: I open the solution, click Build, and obtain an executable that behaves like the supplied binary.
Feel free to leverage dnSpy, ILSpy, De4dot, x64dbg or any preferred toolkit so long as the final code is clean and free of leftover obfuscation junk. Flag anything unrecoverable so we can discuss alternatives.
Skills: C Programming, C# Programming, Software Architecture, C++ Programming, Debugging, Software Development, Reverse Engineering, Visual Studio
Fixed budget:
30 - 250 USD
1 day ago
Websites, IT & Software, Sales & Marketing, C# Programming, Software Architecture, C++ Programming, Debugging, Software Development, Reverse Engineering, Visual Studio
Online game troubleshooting server - client protocol
Applied
not specified
1 day ago
Client Rank
- Medium
Payment method verified
Phone number verified
1 open job
no reviews
Registered: Oct 28, 2025
United Kingdom
Liverpool
03:21
3
Hi,
I’m working on a private/authorized project for an online game (Zone4). I have permission from the original developer.
Current setup:
I run a custom Go server locally (Windows). It listens on TCP 9090 (core), and a game TCP port (44405).
The client connects to 127.0.0.1:9090, sends an encrypted/base64 message that decrypts to GET_SERVER_LIST.
My server replies with an encrypted/base64 JSON server list (framed with a 10-byte ASCII length header). The client logs “Login Success” server list accepted but then immediately disconnects and shows a UI error (Thai message: connection failed / try again). No further packets arrive.
What I tried:
Verified ports are listening (netstat/Test-NetConnection OK).
Adjusted server list JSON fields (tcp_address/ip/port, server_address, udp_address variants).
The client still disconnects after receiving server list (EOF / remote closes connection).
What I need:
A developer to analyze the Windows client behavior (static analysis/strings + runtime), confirm what protocol/handshake it expects after GET_SERVER_LIST, and update the Go server to match it (or adjust client flags/launcher requirements).
Ideally: determine exact post-server-list handshake, required ports, message framing/encryption, and implement minimal responses so the client proceeds past loading/login.
Deliverables:
Working Go server handshake so the client can proceed in-game (at least past login/loading), plus documentation of protocol steps.
Optional: guidance on client launch flags/launcher checks and use of .dat server list files.
I can provide:
Go server source (zip)
Client executables
Logs and screenshots
Thanks.
Budget:
not specified
1 day ago
Web, Mobile & Software Dev, Desktop Application Development
I’m handing over a C# desktop application that has been packed with Themida. I need the protection fully removed and the result turned into a clean, compilable Visual Studio solution so I can move on and tweak both the user interface and the underlying functionality.
Scope
• Completely unpack the current executable, bypassing all Themida layers while keeping every feature 100 % intact.
• Reconstruct the project as a Visual Studio (preferably 2022) solution with proper .csproj files, resources, and references.
• Make sure the code base is readable: recover or sensibly rename obfuscated classes, methods, and variables where possible.
• Because the original build contains zero documentation, add concise inline comments that clarify each major class, critical method, and external call.
• Verify the new build compiles and runs identically to the original on Windows 10/11 without extra setup.
Acceptance
1. Opening the provided solution and pressing Build should produce an executable that matches the behaviour of the packed version.
2. There must be no Themida stubs, virtual machines, or encrypted sections left.
3. I will run a quick test-suite covering launch, core workflows, and UI navigation; everything must pass before final sign-off.
Please include a short note on the main tools or de-virtualisation techniques you intend to use (RevEng, de4dot, dnSpy, custom unpacker scripts, etc.) so I know we’re on the same page.
Skills: C Programming, .NET, C# Programming, Software Architecture, C++ Programming, Software Development, Reverse Engineering, Visual Studio
Fixed budget:
10 - 50 USD
1 day ago
Websites, IT & Software, Sales & Marketing, .NET, C# Programming, Software Architecture, C++ Programming, Software Development, Reverse Engineering, Visual Studio
Join our team as a Web3/Blockchain Engineer to develop decentralized applications and smart contracts. You'll work with Ethereum and EVM-compatible chains, using Solidity and Web3 tools to build secure and scalable blockchain solutions. This role requires experience in smart contract development and blockchain integration, ensuring the reliability and performance of deployed contracts. If you have a passion for blockchain technologies and problem-solving, we'd love to have you on board.
Hourly rate:
20 - 80 USD
1 day ago
Web, Mobile & Software Dev, Other - Software Development
Long term partnership with video editor for pattern interrupts.
Applied
$100
1 day ago
Client Rank
- Medium
Payment method verified
Phone number verified
$8 total spent
2 hires
8 jobs posted
25% hire rate,
1 open job
5.00
of 1 reviews
Registered: May 20, 2023
Singapore
11:21
3
We are looking for a high-impact Video Editor who specializes in Pattern Interrupt and Direct Response advertising. You will not just be editing footage; you will be the "Architect of Attention."
You will work backward from the final edit to tell us exactly what we need to shoot.
Your primary goal is to produce video creatives that stop the scroll, hold attention, and convert viewers into customers. You must understand hook testing, visual pacing, and how to direct camera angles to create dynamic, attention-grabbing transitions.
Key Responsibilities
1. Pre-Production & Creative Direction (The "Tell Us What To Shoot" Part)
Reverse-Engineering the Edit: Review scripts and provide a "Shooting Guide" or visual shot list before production begins.
Angle & Shot Direction: Explicitly specify camera angles needed for specific transitions.
Example: "I need a POV shot of the hand grabbing the item to match the previous frame," or "Do a whip-pan right so I can match-cut to the next scene."
Visual Hook Strategy: Conceptualize the first 3 seconds of the ad. Instruct the talent/videographer on specific movements (e.g., throwing an object at the lens, sudden costume changes, breaking the fourth wall) that serve as pattern interrupts.
2. Video Editing & Post-Production
Pattern Interrupt Editing: Edit fast-paced ads that reset the viewer's attention span every 3–5 seconds using visual jolts, unexpected sound effects, mixed media (GIFs/memes), and zoom cuts.
Dynamic Text & Captions: Add kinetic typography (e.g., "Hormozi style") that keeps the viewer’s eyes moving and emphasizes key selling points.
Sound Design: Use sound effects (whooshes, pops, risers, glitches) to emphasize movements and keep the energy high.
Platform Optimization: Expertly frame and format videos for TikTok/Reels (9:16)
3. Performance & Iteration
Modular Editing: Create multiple variations of the same ad (e.g., 1 Core Body with 5 different "Hooks/Intros") to test what performs best.
Data-Driven Feedback: Review ad performance. If an ad has a high "Thumb Stop Rate" but low retention, you will diagnose why and adjust the pacing or angles for the next shoot.
Fixed budget:
100 USD
1 day ago
Client's recent history (1 work)
Google Ads Specialist needed for Google ads WhatsApp Conversion tracking check
Our Python-based platform has been in production long enough to accumulate a handful of thorny issues. I want a fresh, senior-level pair of eyes to go through the codebase, diagnose what’s really happening, and bring the system back to a stable, performant and secure state.
Scope of the audit
• Security: probe for obvious misconfigurations, insecure dependencies, injection risks and any surface that could be exploited.
• Performance: profile critical paths, highlight bottlenecks, and suggest optimisations that translate into measurable speed-ups or lower resource usage.
• Code quality: evaluate structure, readability and test coverage; recommend refactors that reduce technical debt.
Highest priority fix
Functionality issues come first. Anything preventing core features from working as intended must be resolved before deeper refactors or fine-tuning.
Documentation reality
There is currently no formal documentation, so part of the job will involve reverse-engineering intent and leaving behind concise comments or README notes for future maintainers.
Deliverables
1. An initial audit report summarising findings across security, performance and code quality, with recommended actions ranked by impact.
2. Patches or pull requests that eliminate the identified functionality bugs.
3. Automated tests (pytest preferred) covering new or previously untested critical paths.
4. A short hand-off guide describing the fixes, new test commands and any configuration changes.
Acceptance criteria
• All reported functionality bugs reproducible on day one are no longer reproducible after your fixes.
• Unit and integration tests run cleanly in CI.
• Performance improvements or security remediations are demonstrable using the benchmarks or scans you include in the report.
Technologies involved: Python 3.x, Git, pytest, profiling tools such as cProfile or Py-Spy, and any static analysis you usually rely on (e.g., Bandit, SonarQube).
If this matches your expertise, please outline a brief plan of attack and typical turnaround for a project of this nature.
Develop a comprehensive solution to map, classify, and simulate device telemetries for Android applications running on emulators. The goal is to create an automated pipeline that analyzes android app packages and generates runtime instrumentation scripts.
Complete requirements doc attached.
Client's questions:
Which of these items do you have deep experience with: 1. Instrumentation, 2. Reverse Engi., 3. APK Analysis, 4. Frida, 5. OS Security, 6. Scripting, 7. Network Analysis, 8. Deobfuscation, 9. Android Dev., 10. Static Code Analysis, 11. WhatsApp internals
Describe your recent experience with similar projects
We're looking for a developer to reverse engineer how a specific Android/iOS app generates short links. The goal of this is to programatically generate those links.
Those links look like this: share.domain.com/(randomly-generated-id)
This may include custom protocols, certificate pinning and more anti-debugging measurements. Please provide a short report and a reproducible example with code (any language is fine). Feel free to use any tools as necessary (Frida, etc).
Client's questions:
Describe your recent experience with similar projects
I need the executable of my own desktop application fully unpacked from its Themida envelope so that the original x86/x64 code, resources, and section layout are restored exactly as they were before protection. My end-goal is to resume regular maintenance on the project, so the recovered binary must assemble and debug cleanly in Visual Studio and load without a Themida loader stub.
Scope
• Work on a single Windows desktop EXE protected with a recent build of Themida.
• Produce an unpacked executable that runs identically to the original and is build-ready for further development.
• Provide a short technical report describing the unpacking process (breakpoints used in x64dbg/OllyDbg, OEP discovery, import rebuilding, VM handler fixes, etc.) so I can replicate the steps if the software is updated later.
Acceptance criteria
1. Hash comparison shows non-encrypted sections restored and import table rebuilt.
2. The unpacked file launches on Windows 10/11 with identical functionality.
3. IDA or Ghidra loads the file without stubs or obfuscated APIs, allowing clean decompilation.
I own the software and have full legal rights to modify it, so copyright concerns are covered. If any helper scripts or loaders are required, include them alongside clear usage notes.
20ft Shipping Container Office – Technical & 3D Design
Applied
not specified
3 days ago
Client Rank
- Risky
Payment method not verified
Phone number verified
1 open job
United States
21:21
1
Description
I need technical fabrication drawings and 3D design for a 20ft shipping container office. Drawings must be practical for fabrication, welding, and electrical installation.
Container & Openings:
• Standard 20ft container
• 1 door on long side, centered
• 2 windows left and right of door, each centered between door and container end
• Layout must be symmetrical
Window:
• 32 x 40 in, mounted with 1x3 in metal tube frame
• Frame thickness: 850 mm
• Corrugated wall; cut and weld flat
• Exact cut-out size and location required
Door:
• Size: 38 5/8” x 81 5/16”
• Frame: 1x3 in metal tube
• Door thickness: 120 mm
• Cut-out must allow welding and reinforcement
Interior Walls:
• Panels 600 x 2300 x 60 mm
• Light gauge steel frame with XPS insulation
• SPC interlock finish
Ceiling & Floor:
• Cross metal studs, 500 mm spacing, 80 mm drop
• XPS insulation + acoustic panels
• SPC vinyl flooring over baseboard
Electrical & AC:
• Split AC on short closed side
• 6 LED ceiling lights evenly spaced
• 7 outlets: 1 under each window, 3 along long walls, 1 each short wall
• Electrical wiring inside PVC conduit concealed in wall panels, from ceiling to outlets
Deliverables:
• Technical drawings (PDF or DWG) with exact door/window cut-outs
• Wall panel layout, ceiling, lighting, AC, and internal conduit routing
• 3D design showing full layout and openings
• Clear dimensions and fabrication notes
Requirements:
• Experience with container/fabrication projects
• Ability to produce technical and 3D drawings
• Clear, buildable designs
I have a closed-source loader that ships a set of PyTorch-based models stored in obfuscated “.bin” containers. They are not the usual TorchScript or ONNX packages; the application unwraps and feeds them directly to LibTorch at runtime.
Your task is to reverse whatever protection the loader applies so I end up with usable, stand-alone TorchScript (.pt) files or another format that can be loaded with standard PyTorch APIs.
What I know so far
• Framework: PyTorch / LibTorch C++ API
• Model type: general machine-learning (not image or NLP specific)
• File extension shown on disk: .bin (encrypted)
What I need from you
1. Analyse the loader binary, identify the decryption / unpacking routine, and reconstruct the original weights and network graph.
2. Hand over clean model files that I can load in a vanilla PyTorch script and run inference without the proprietary loader.
3. Document the steps or tooling you used well enough that I can repeat the process if the vendor updates the package.
Acceptance criteria
• I can call `torch.jit.load()` (or the appropriate PyTorch loader) on your output without errors.
• A quick inference test matches the output of the original application for the same input within normal floating-point tolerance.
• No dependency on the vendor’s loader at runtime.
You’ll likely rely on C++ disassembly, dynamic analysis, and perhaps custom Python helpers; feel free to bring your favourite tools (Ghidra, IDA, Radare2, Frida, etc.). I’m happy to supply the loader executable and a sample encrypted file once we start.
Skills: C Programming, Python, C# Programming, C++ Programming, Software Development, Binary Analysis, Encryption, Data Analysis, Reverse Engineering, API Development
Fixed budget:
1,500 - 3,000 USD
3 days ago
Websites, IT & Software, Engineering & Science, Sales & Marketing, Business, Accounting, Human Resources & Legal, Python, C# Programming, C++ Programming, Software Development, Binary Analysis, Encryption, Data Analysis, Reverse Engineering, API Development
Android App – API & Backend Security Testing
Applied
$3,000
3 days ago
Client Rank
- Medium
Payment method verified
Phone number verified
1 open job
no reviews
Industry: Tech & IT
Company size: 2
Registered: Jan 23, 2026
Turkey
Istanbul
03:21
3
I am looking for an experienced developer or security tester to help me understand and test how my Android application communicates with backend APIs.
The task is to:
Identify which API endpoints the app is using
Understand request and response payloads
Try calling the same APIs outside the app (Postman or scripts)
Check if the backend behaves correctly when requests come from outside the original app
The goal is to validate backend security and logic, not to hack or crack anything.
All work will be done on my own application and in a real environment.
I need help stripping a Themida wrapper from a Windows desktop executable so I can study its inner workings. The goal is strictly reverse-engineering: once the protection is gone the file must behave exactly like the original while loading cleanly in IDA Pro or Ghidra with a fully rebuilt import table and restored original entry point.
The target is a 32-bit PE running on Windows 10 ×64. I will supply the protected binary and can run any test cases you provide to verify parity with the original.
Deliverables
• Unpacked executable with no residual virtualisation or anti-debug code
• Rebuilt IAT, correct OEP, intact resources and TLS callbacks
• A concise write-up or x64dbg/Scylla/TitanEngine script that documents every step so I can repeat the process on future builds
Acceptance criteria: the unpacked file must run side-by-side with the protected one and open in IDA or Ghidra without crashes or opaque stubs.
If you need anything else from my side just let me know; I’m aiming for a quick turnaround.
Skills: C Programming, C++ Programming, Assembly, Debugging, x86/x64 Assembler, Software Development, Binary Analysis, Reverse Engineering
Fixed budget:
10 - 50 USD
3 days ago
Websites, IT & Software, Sales & Marketing, C++ Programming, Assembly, Debugging, x86/x64 Assembler, Software Development, Binary Analysis, Reverse Engineering
Senior Full-Stack Developer: Whop API + Discord + TradingView Pine Script v5 Automation
Applied
$2,000
3 days ago
Client Rank
- Medium
Payment method verified
Phone number verified
1 open job
United States
21:21
3
PROJECT SCOPE OF WORK: Pairadice HLS (Titan Edition)
CLIENT: Pairadice Opulent Vibes LLC (Schererville, IN)
PROJECT OBJECTIVE: To build a secured, automated, and "Black Box" financial technology ecosystem.
I. PROPRIETARY INDICATOR: "THE CROSSING GUARD" (PINE SCRIPT V5)
Multi-Timeframe Confluence Engine: The developer will build an indicator that evaluates market conditions across a Micro, Intermediate, and Macro hierarchy.
Hierarchical Filtration: Entry signals shall only be generated when a specific "Trigger" event on the Micro timeframe aligns with the "Trend Anchor" on the Macro timeframe and "Momentum Confirmation" on the Intermediate timeframe.
Strict Non-Repainting Protocol: All signals must be final and immutable upon the close of the trigger candle. The developer must utilize barstate.isconfirmed and request.security with lookahead=barmerge.lookahead_off to prevent Future Leakage or misleading historical signals.
Institutional Floor Layer: Implement a toggleable, long-term trend anchor (the "Portfolio Floor") designed to identify institutional-grade "Deep Value" zones.
UI/UX: A clean, professional interface with custom-branded "CALL" and "PUT" labels.
II. SECURITY & ANTI-REVERSE ENGINEERING
Code Obfuscation: The developer is required to obfuscate the final Pine Script source code. Variable names, proprietary constants, and internal logic strings must be randomized to prevent reverse engineering of the LLC’s logic.
Protected Publication: The script will be published as Invite-Only. It must remain a "Black Box" to the end-user.
IP Ownership: Full, un-obfuscated source code and all intellectual property shall be transferred to Pairadice Opulent Vibes LLC upon project completion.
III. AUTOMATED ACCESS BRIDGE (THE 60-SECOND RULE)
Whop-to-TradingView Integration: Develop a high-speed automated bridge between Whop.com payment webhooks and the TradingView whitelisting system.
Performance SLA: Access must be granted to the customer’s TradingView ID and Discord roles within 60 seconds of a successful transaction.
Discord Integration: Automated assignment/revocation of roles and real-time signal streaming via Discord webhooks.
NOTE: To be considered for this project, you must include the keyword PINEAPPLE in the very first line of your proposal. This confirms you have read the full scope, understand the non-repainting/obfuscation requirements, and are willing to sign an NDA before we share the specific logic.
I have a fully-assembled board in hand and I need the complete electrical schematic recreated in KiCad. The board carries a mix of through-hole and surface-mount parts, but I do not have a BOM or any design files—only the physical PCB itself.
You will need to work from detailed photographs (front, back, and close-ups that I will supply), trace the nets, identify each component value or part number, and translate everything into a clean, well-labeled KiCad schematic ready for further editing and annotation on my end.
Key deliverables:
• KiCad project folder containing the schematic (.kicad_sch) with correctly named nets, footprints, and component values.
• Any custom symbol or footprint libraries you create while mapping unusual parts.
Accuracy matters: every connection on the finished board must appear exactly in the schematic so that I can regenerate the layout later without surprises. If you need clarification on obscure markings or hidden vias, just let me know and I will provide extra images or measurements.
Experience with PCB reverse-engineering and KiCad’s latest version is essential. I look forward to seeing how you tackle this puzzle and turn a bare board back into a living schematic.
Bridge USB Polygraph Hardware to Replit Web App (Local → Web Data Stream)
Applied
$15 - $55
/ hr
3 days ago
Client Rank
- Excellent
Payment method verified
$32 136 total spent
103 hires, 16 active
103 jobs posted
100% hire rate,
1 open job
19.19 /hr avg hourly rate paid
629 hours paid
4.99
of 102 reviews
Individual client
Registered: Dec 9, 2017
United States
Manhasset
00:21
5
Overview:
I’m building an online application hosted on Replit that needs to receive real-time sensor data from a local USB polygraph device connected to a practitioner’s laptop (Windows).
The polygraph hardware already works with its official Windows desktop software, confirming the device and sensors function correctly. The task is to create a local-to-web integration layer so this hardware can be used as a data input source for my Replit-hosted app.
This is a hardware → local service → Replit app problem.
Hardware Details:
- USB polygraph device (consumer-grade)
- Windows laptop (practitioner-controlled)
- Three sensor inputs:
1. Breathing belt (respiration)
2. Finger pulse sensor
3. Galvanic skin response (GSR) finger bands
- Device is detected by Windows and streams live data to official software
Target Architecture (High Level):
The expected architecture will likely be:
USB Polygraph (local)
→ Local bridge service / agent (Windows)
→ Secure stream or API
→ Replit-hosted web app
You are not expected to run USB hardware directly inside Replit.
Scope of Work:
The developer will:
1. Identify how the USB polygraph communicates
- USB HID, serial COM, or proprietary protocol
2. Access the live sensor data stream
- Raw or processed values are acceptable
3. Build a local bridge service that:
- Runs on Windows
- Reads sensor data from the device
- Exposes data via:
-- WebSocket, HTTP API, or local TCP/UDP (developer’s choice)
4. Enable the Replit app to receive this data
- Real-time or near–real-time
- Clean, documented data format (JSON preferred)
Reverse engineering is acceptable if required.
What This Is NOT:
❌ Not a UI redesign
❌ Not rebuilding the polygraph software
❌ Not a mobile app
❌ Not running USB hardware directly in the browser
Required Skills:
- USB device communication on Windows
- HID / USB-serial / driver-level data access
- Local agent / daemon development
- WebSockets or API streaming
- Python, Node.js, or C++ (open to recommendation)
- Experience bridging local hardware → cloud/web apps
Nice to Have:
- Experience with biometric sensors (pulse, GSR, respiration)
- Signal processing familiarity
- Security-aware local agent design
- Prior work with Replit or similar hosted environments
Deliverables:
- Working local bridge service (Windows)
- Replit-compatible data stream or API
- Documentation explaining:
--Setup
--Data schema
--How the Replit app connects
-(Optional) Minimal demo showing live data flowing into the web app
Notes
- Hardware is already owned and tested
- Screenshots, Device Manager info, and behavior details available
- This is a technical systems integration task
Client's questions:
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3D Model Extraction Specialist with C++ and Reverse Engineering Skills
Applied
$20 - $25
/ hr
4 days ago
Client Rank
- Risky
Payment method not verified
Phone number verified
1 jobs posted
1 open job
no reviews
Registered: Jan 22, 2026
Germany
04:21
1
I am seeking a highly skilled professional with expertise in reverse engineering and a strong background in C++. The ideal candidate will assist in the extraction of 3D models from specific file formats. You should possess a deep understanding of 3D rendering and manipulation, and be able to navigate complex modeling scenarios. Collaboration and effective communication skills are essential, as you will be working closely with me to achieve our project goals.
