Reverse Engineering Projects for Freelancers

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110 projects published for past 72 hours.

Job Title	Budget	Published
Reverse Engineer STEP / STL Controller Housing into Editable Parametric CAD Applied	$15 - $40 / hr	4 hours ago	Client Rank - Medium Payment method verified $1 000 total spent 3 hires, 1 active 3 jobs posted 100% hire rate, 2 open job 30.00 /hr avg hourly rate paid 20 hours paid 5.00 of 2 reviews Individual client Registered: Feb 24, 2019 United States San Jose 03:48 3
I have a two-part plastic controller housing. One half is a clean STEP file. The other half had geometry issues and was repaired into a printable mesh-style STEP/STL. I need a mechanical/CAD engineer to rebuild the repaired half into a clean, editable parametric CAD model. Requirements: • Exterior surface must match the provided reference exactly • Interior features can be rebuilt (bosses, posts, mounting features) • Final file should be a clean solid model (Fusion360, SolidWorks, or STEP AP214/AP242) • Geometry should be suitable for modification and future revisions Deliverables: • Editable CAD model • Exported STEP file • Matching mating surface with the existing half Files provided: • Repaired housing half (STEP/STL reference) • Clean mating housing half (STEP) • Assembly orientation reference Estimated effort: 3–6 hours for experienced CAD engineer. Hourly rate: 15 - 40 USD 4 hours ago Client's recent history (2 works) Electrical Engineer for Battery Charger project To freelancer: 5 Thanks again for the hard work and great team work. Design went well and I'd happily come back. Thanks! To client: 5 Good client, I liked to work with him and I hope to work again soon Oct 2020 - Jan 2021 FIXED $400.00 Eagle package check, layout, and routing. To freelancer: 5 Really great working with Eric. He did a 6 layer PCB design for me on a pretty tight schedule. Communication was frequ… Really great working with Eric. He did a 6 layer PCB design for me on a pretty tight schedule. Communication was frequent and much appreciated. Looking forward to working with him on future jobs. Thanks again Eric! To client: 5 Great work! I want to work with this client continually. Feb 2019 - Mar 2019 20 hrs @ $30.00/hr Billed: $600.00 Engineering & Architecture, 3D Modeling & CAD Open project
C Executable Reverse Engineering Needed Applied	$1,500 - $3,000	9 hours ago	Client Rank - not enough data -
I have several Windows executables and accompanying .dll files that were originally written in C, but the source code has been lost. I will supply only those compiled binaries; no partial code or documentation is available. Your task is to work through the binaries, reconstruct human-readable, buildable C source, and document any non-obvious logic you uncover along the way. I expect the recovered code to compile on a current GCC/Clang toolchain, reproduce the original behaviour, and be organised into clear modules with meaningful comments. Feel free to use IDA Pro, Ghidra, Hopper, Radare2, or any other reversing tools you are comfortable with—just note your workflow so I can maintain the codebase afterward. Deliverables • Complete C source tree that builds cleanly (no warnings with ‑Wall if reasonably possible) • Brief technical report outlining the binary analysis process, major functions located, and any unresolved sections If you discover obfuscation or security mechanisms that prevent a faithful recovery, flag them early so we can decide whether to stub or fully emulate that functionality. I’ll be available for quick turn-round questions and test cases as you progress. Skills: C Programming, .NET, C# Programming, C++ Programming, Software Development, Binary Analysis, Documentation, Reverse Engineering Fixed budget: 1,500 - 3,000 USD 9 hours ago Websites, IT & Software, Sales & Marketing, .NET, C# Programming, C++ Programming, Software Development, Binary Analysis, Documentation, Reverse Engineering Open project
Senior Security Researcher for Browser-Level Entropy & Identity Persistence Framework Applied	$250 - $750	9 hours ago	Client Rank - not enough data -
We are seeking a highly specialized Security Researcher / Browser Engineer to develop an advanced framework for Digital Identity Persistence and Environment Signal Auditing. The project focuses on high-precision mobile environment emulation (iOS/Android) for large-scale behavioral research. 1. Core Architecture & Signal Hardening Low-Level Binary Modification: Source-level hardening of Chromium and WebKit engines to neutralize internal environment signals and automation flags. High-Concurrency Contexts: Development of an isolated sandbox architecture supporting 20-30 simultaneous execution contexts with zero entropy leakage. Persistent State Management: Implementation of a robust system for managing complex identity metadata and session persistence objects. 2. Signal Synthesis & Protocol Alignment Hardware Entropy Synthesis: Generation of unique, persistent hardware-level signatures, including WebGL, AudioContext, and Canvas fingerprints. Protocol Synchronization: Precise alignment of JA3/TLS fingerprints and TCP/IP stack metrics (MTU/TTL) to match emulated device profiles and network sources. Sensor Telemetry Injection: Real-time injection of mobile-specific telemetry (Accelerometer, Gyroscope, Battery API) to ensure signal integrity. 3. Behavioral Logic & Remote Interface Organic Interaction Simulation: Implementation of non-linear navigation patterns based on Gaussian distributions and human-like movement dynamics. Remote Management Interface: Integration of a remote API (Telegram-based) for real-time telemetry monitoring, execution control, and secure data retrieval. IMPORTANT NOTICE: The full technical scope, including specific target platforms and detailed functional requirements, will be disclosed to the selected candidate via a Comprehensive Technical Document (CTD) only after a successful technical interview and mutual agreement. Technical Requirements: Deep expertise in Browser Reverse Engineering and TLS/JA3 Fingerprinting. Proficiency in C++, Go, or High-Performance Asynchronous Python. Proven ability to achieve a "Genuine" rating on advanced integrity verification platforms (e.g., Pixelscan, CreepJS). Skills: Java, Python, Android, Computer Security, C++ Programming, Security, Signal Processing, Mobile Development, Reverse Engineering, API Development Fixed budget: 250 - 750 USD 9 hours ago Websites, IT & Software, Mobile Phones & Computing, Engineering & Science, Business, Accounting, Human Resources & Legal, Python, Computer Security, C++ Programming, Mobile Development, Security, Signal Processing, Android, Reverse Engineering, API Development Open project
High-Concurrency Browser Profile Architecture Applied	$250 - $750	10 hours ago	Client Rank - not enough data -
We are looking for a highly skilled Browser Engineer to develop a sophisticated framework for Large-Scale Web Compatibility Testing and Digital Privacy Research. The project involves creating a high-performance system that manages multiple isolated mobile browser environments (iOS/Safari & Android/Chrome) with 100% fingerprint consistency. 1. Core Architecture & Emulation Multi-Engine Support: A dynamic system built on the latest Chromium and WebKit cores, ensuring compatibility with future browser updates. Kernel-Level Neutralization: Deep modification of browser internals (C++/Source-code level) to completely neutralize all automated-environment flags (e.g., navigator.webdriver). High-Concurrency: The architecture must handle 20-30 isolated sessions simultaneously on a single system, ensuring zero crosstalk between session data and hardware identifiers. 2. Identity Synthesis & Fingerprinting Hardware Signal Emulation: Unique and persistent generation of WebGL, Canvas, AudioContext, and Font fingerprints for every profile. Sensor Data Injection: Realistic emulation of mobile telemetry, including Accelerometer, Gyroscope, and Battery API dynamics, simulating natural human interaction. Network Stack Alignment: Full synchronization of TCP/IP Fingerprints (MTU/TTL) and WebRTC settings to match the emulated device profile and proxy metadata (SOCKS5/Mobile). 3. Behavioral Logic & Session Management Advanced Navigation Algorithms: Implementation of non-linear, organic user journeys based on Chaos theory and Gaussian distributions (scrolling, clicking, and hover patterns). Session Warming: Automated workflows to interact with high-authority platforms to establish robust session history and "Trust Scores." Authentication Resolution: Automated handling of complex login and multi-step verification sequences using provided datasets. 4. Remote Management & API Integration Remote Control: Full system management via a messaging API (Telegram Bot) for real-time commands (start, stop, status). Automated Data Delivery: Secure extraction and delivery of successful session metadata and persistence objects in standardized formats. IMPORTANT NOTE: Full project specifications, specific functional requirements, and detailed configuration settings will be provided to the selected candidate in a comprehensive technical document after the initial interview/agreement. Technical Requirements: Deep expertise in TLS/JA3 Fingerprinting and browser-level reverse engineering. Proficiency in C++, Go, or high-performance Asynchronous Python. The system must achieve a "Genuine/Human" rating on advanced integrity platforms (e.g., Pixelscan, CreepJS). Skills: Mobile App Development, Android, C# Programming, C++ Programming, Web Development, Data Extraction, Data Delivery, Reverse Engineering, API Integration, WebRTC Fixed budget: 250 - 750 USD 10 hours ago Websites, IT & Software, Mobile Phones & Computing, Data Entry & Admin, C# Programming, C++ Programming, Web Development, Data Extraction, Data Delivery, Mobile App Development, Android, Reverse Engineering, API Integration, WebRTC Open project
Embedded Systems / IoT Engineer / Robotics Applied	not specified	13 hours ago	Client Rank - Risky Payment method not verified Phone number verified 1 open job Industry: Tech & IT Company size: 2 United States 01:48 1
We have a fully automated robot cafe installed in the Miami, Florida area. The system consists of a touchscreen Windows kiosk, an Arduino-based intermediary controller, a coffee machine, a robotic arm (manipulator), and a soft-serve ice cream machine — all integrated into a single automated workflow. We need a hands-on technical assessment at our location. The scope includes: identifying the communication protocol between the Arduino controller and each hardware component (coffee machine, robotic arm, ice cream machine), documenting all commands and responses, and assessing how the Windows kiosk software communicates with the Arduino layer. The end goal is to understand the full system architecture in order to migrate to a proper REST API backend, hosted on Amazon AWS. We need to know what is technically feasible, what the integration points are, and what the path forward looks like. Deliverable: A written technical report covering protocol analysis, command mapping, system architecture findings, and a recommended roadmap toward an API-based infrastructure. One-time on-site visit in the Miami, Florida area. Fixed price project. Client's questions: Describe your recent experience with similar projects Please list any certifications related to this project Budget: not specified 13 hours ago Engineering & Architecture, Electrical & Electronic Engineering Open project
reverse engineer a simple part CAD Applied	$20	13 hours ago	Client Rank - Excellent Payment method verified Phone number verified $2 386 total spent 22 hires, 5 active 13 jobs posted 100% hire rate, 1 open job 24.74 /hr avg hourly rate paid 11 hours paid 5.00 of 14 reviews Industry: Education Individual client Registered: Sep 11, 2023 Israel lakewood NJ 08:48 5
I have a small plastic part that I need reverse engineered into CAD. I will ship the physical piece to you so it can be measured accurately. Deliverables needed: 1. CAD model of the part 2. STEP file (.step) 3. STL file for 3D printing The part is simple and cylindrical (see attached photos). It does not need complex engineering analysis — just accurate modeling so it can be reproduced to exact size. If possible, I may also want 10 or more 3D printed copies after the model is complete (optional, not required). Please let me know: • Your price for modeling • If you can also provide 3D prints Thank you. Fixed budget: 20 USD 13 hours ago Client's recent history (22 works) Jobs in progress (2) Website Jun 2025 - Present FIXED $350.00 design DOP images for tee shirts Dec 2024 - Present FIXED $335.50 View more (-3) General Data Entry No feedback given Feb 2026 1 hrs @ $15.14/hr Billed: $12.62 Website finish up No feedback given Aug 2025 FIXED $250.00 Bulk editing mp3s No feedback given Aug 2025 FIXED $165.25 Convert Opus to Mp3 p2 To freelancer: 5 To client: 5 He’s been great throughout the project, including while working on other tasks! Dec 2025 - Mar 2026 FIXED $10.00 Textile Engineer for Outdoor Bedding Design To freelancer: 5 Muhammad is the best worker on Upwork hands-down (from the 20+ I've tried) He is 120% honest, will let you know exactly … Muhammad is the best worker on Upwork hands-down (from the 20+ I've tried) He is 120% honest, will let you know exactly if he fits your job, then produce highest quality work, and then possibly tell you to pay him less than what you made up with in the beginning-because he felt it was an easier job than expected (as with my case!) Grab him To client: 5 Nov 2025 - Mar 2026 FIXED $100.00 General Investment Advisory To freelancer: 5 Feb 2026 - Feb 2026 1 hrs @ $167.49/hr Billed: $167.49 Fix mic bumping To freelancer: 5 Great job, fluent english, understood the job and performed above expected! To client: 5 Clear requirements and fast communication throughout the project Jan 2026 - Jan 2026 FIXED $35.25 Design simple website/landing page To freelancer: 5 Amazing work, went way above I expected. Understood exactly what I wanted and was creative and did way more than I asked… Amazing work, went way above I expected. Understood exactly what I wanted and was creative and did way more than I asked! A real find To client: 5 Dec 2025 - Dec 2025 FIXED $65.50 WordPress and WooCommerce Fixes Needed To freelancer: 5 Talented work, above the typical. Thanks! To client: 5 Thanks :) Nov 2025 - Dec 2025 FIXED $40.00 Convert Opus to Mp3 To freelancer: 5 Built me a cutom program to fit exactly my needs. Very talented and quick job! To client: 5 One word for him: Awesome! Dec 2025 - Dec 2025 Compress videos To freelancer: 5 To client: 5 Oct 2025 - Nov 2025 FIXED $10.00 Scriptwriter Needed for Automating Link Replacement on WooCommerce Site To freelancer: 5 Good at the job, quality work To client: 5 Oct 2025 - Oct 2025 FIXED $30.75 WordPress Security Cleanup and Protection To freelancer: 5 Great worker, fast turnaround, attention to detail and patient. Exactly what everyone wants To client: 5 Highly recommended. Very nice client. Oct 2025 - Oct 2025 SEO To freelancer: 5 Matan did an amazing job-he is a top level SEO expert and and really highered my ranking. He was super freindly and pati… Matan did an amazing job-he is a top level SEO expert and and really highered my ranking. He was super freindly and patient, and gave me two zoom classes, before and after, to discuss what to do, and after, to show what he did, and explain how I can continue forward, which were really valuable. Highly recommended To client: 5 Sep 2025 - Sep 2025 FIXED $210.50 edit website To freelancer: 5 To client: 5 Aug 2025 - Aug 2025 FIXED $45.25 edit website To freelancer: 5 Did an excellent job, understood what I wanted, and was always available. Quality work for cheap-what everyone is lookin… Did an excellent job, understood what I wanted, and was always available. Quality work for cheap-what everyone is looking for To client: 5 Aug 2025 - Aug 2025 FIXED $55.25 Bulk rename files with logic To freelancer: 5 This guy is a slam-dunk genious and can do anything for you, and equally as reputable is that he understands the task at… This guy is a slam-dunk genious and can do anything for you, and equally as reputable is that he understands the task at hand, possibly even better than you, making the job come out perfect. Grab him! Jul 2025 - Jul 2025 FIXED $30.25 Website To freelancer: 4.15 To client: 5 Jun 2025 - Jun 2025 FIXED $5.00 Audio Editing for Old Recordings No feedback given Sep 2023 - Dec 2023 5 hrs @ $18.27/hr Billed: $97.46 graphic design of cover case To freelancer: 3.75 To client: 5 Perfect experience working with David, great communication and easy to understand. Oct 2023 - Oct 2023 4 hrs @ $13.28/hr Billed: $57.55 View more (18) Engineering & Architecture, 3D Modeling & CAD Open project
House cleanup Applied	not specified	20 hours ago	Client Rank - Risky Payment method not verified Phone number verified 1 open job Netherlands 07:48 1
I need the model cleaned specifically for 3D printing. The most important parts are straight walls, clean roof edges, readable window openings, and sharper corners/overall architectural definition. The final piece will be printed on a Bambu Lab P2S on the finest setting and the circular model will be about 15 cm in diameter. If possible, it would also be great to keep or import some very similar trees, bushes, and surrounding landscape elements so they can still be printed nicely. Budget: not specified 20 hours ago Design & Creative, Video & Animation Open project
Lead Architect Applied	$500	1 day ago	Client Rank - Risky Payment method not verified Phone number verified 1 open job United Kingdom 06:48 1
Initial $500 budget is for Milestone 1 (7-day Prototype). Total project budget is negotiable for long-term development. JOB TITLE: Lead Architect: Titan Stealth AI-Augmented Platform (Gas / Electrical / Plumbing / Appliances) PROJECT OVERVIEW: We are building a proprietary, high-security diagnostic engine for the UK’s Tier-1 home service sectors (Boilers, Plumbing, Electrical, Appliances). This platform will out-pace multi-billion-dollar firms by providing engineers with a real-time, "Hands-Free" AI-Diagnostic Consigliere. ASSETS READY FOR DEPLOYMENT: 1.⁠ ⁠Proprietary Knowledge Base: 207 structured technical files (Obsisidian/Markdown) ready for immediate Vector Database ingestion. 2.⁠ ⁠Manufacturer Credentials: Full authorized access to 16 major manufacturer portals (Gas, Electrical, Appliances). The Ghost must use these credentials to deep-scrape "Dealer-Only" Part Trees and Technical Bulletins. THE CORE STACK (MANDATORY REQUIREMENTS): 1.⁠ ⁠The "Ghost" Credential-Based Engine: •⁠ ⁠Authorized Deep Extraction: Bot must log in to 16 manufacturer portals and ingest "Part Trees," Gas Technical Bulletins, Boiler Error Codes, and Electrical Wiring Diagrams. •⁠ ⁠State-Handling & Stealth: Navigating complex authenticated sessions (Parts/Technical/Safety Tabs) with 0% data loss while maintaining undetectable session headers. 2.⁠ ⁠The "Eyes" (Visual Recognition): •⁠ ⁠Rating Plate OCR: Camera module to instantly scan Boiler Data Plates, Fuse Box Labels, and Appliance Stickers to trigger the "Diagnostic Brain." 3.⁠ ⁠The "Voice" (Two-Way Neural Loop): •⁠ ⁠Hands-Free Workflow: Integration of Whisper (STT) and TTS for a verbal diagnostic loop (e.g., "AI, what is the resistance value for the NTC sensor on this Vaillant?"). •⁠ ⁠Recursive Learning: The AI must record and "learn" from every verbal fix confirmation provided by the engineer on-site. 4.⁠ ⁠The "Master Dashboard" (KPI & Analytics): •⁠ ⁠Multi-Trade Schema: Linking technical data (Obsidian + Scraped Dealer Data) to Customer History and Engineer "First Time Fix" (FTF) rates. 5.⁠ ⁠Fortress Security: •⁠ ⁠Stealth Architecture: Hardened against reverse-engineering. Data sources and credentials must be encrypted and hidden from corporate IT teams. INTERVIEW PROTOCOL (NO TIME WASTERS): You must be ready for a 5-minute live screen-share within 24 hours. 1.⁠ ⁠Show live data moving from a secured site into a structured database. 2.⁠ ⁠Explain how you will manage 16 different authenticated sessions for deep-scraping. 3.⁠ ⁠Confirm you can start Saturday. Fixed budget: 500 USD 1 day ago Sales & Marketing, Lead Generation & Telemarketing Open project
Experienced Virtual Assistant for Competitor Analysis and Shopify Development Applied	$5 - $8 / hr	1 day ago	Client Rank - Medium Payment method verified Phone number verified 1 open job Industry: Retail & Consumer Goods Individual client Israel 08:48 3
Job Title: Expert Shopify Product Researcher & AI Page Builder (E-commerce) About the Role: We are a fast-growing e-commerce brand. We don't do cheap, low-quality dropshipping. We sell premium problem-solving products. We are looking for an experienced and highly efficient Virtual Assistant to reverse-engineer competitor websites, source high-quality products, and build high-converting Shopify draft pages using AI. You are NOT a fit if: You are a beginner looking to "learn on the job". You build ugly, basic dropshipping pages with Chinese text on images. You need to be micromanaged. Your Responsibilities: Reverse Engineering: Use Ubersuggest (we will provide you with full account access) to analyze our competitors and mine winning keywords. Strict Sourcing: Find products on AliExpress matching strict criteria (Minimum 4.5 stars, 50+ reviews, total cost between $10-$25). AI Prompting: Use ChatGPT/Gemini to generate compelling, direct-response product copy and FAQs in Hebrew (You DO NOT need to know Hebrew, but you MUST be an expert at using AI to generate it based on our prompts). AI Image Generation: Use Midjourney, Nano Banana 2, or Canva AI to generate clean, high-quality lifestyle images for the products. Shopify Execution: Build and format the product pages in Shopify, saving them as ready-to-publish drafts. Requirements: Proven experience in Shopify product page creation (We will check your portfolio). Expert-level skills in AI prompting (ChatGPT/Gemini/Image generators). Extreme attention to detail and ability to follow a strict SOP without deviations. How to Apply (READ CAREFULLY): We only hire people who pay attention to details. To prove you have read this entire job post, you MUST do the following: Start your Cover Letter with the exact phrase: "GROWTH ARCHITECT". (Proposals without this exact phrase at the very top will be instantly declined). Include a link to at least ONE Shopify product page you have built that you are proud of. Write one short sentence explaining which AI tool is your favorite for generating product descriptions and why. Client's questions: Describe your recent experience with similar projects Please list any certifications related to this project Hourly rate: 5 - 8 USD 1 day ago Admin Support, Virtual Assistance Open project
Automation Expert Needed to Optimize Slot Booking Bot Performance Applied	$30 - $60 / hr	1 day ago	Client Rank - Medium Payment method verified Phone number verified $100 total spent 1 hires 8 jobs posted 13% hire rate, 3 open job 5.00 of 1 reviews Registered: Aug 28, 2025 United Arab Emirates Dubai 10:48 3
Description: I have an existing automation bot that helps monitor and capture available booking slots on a website. The bot is already fully functional and successfully detects and selects slots. However, due to high traffic and competition, it sometimes misses opportunities or fails to convert some captured slots into successful bookings. I'm looking for an experienced developer to analyze and optimize a specific portion of the code responsible for slot capture and processing, while keeping the rest of the system unchanged. Key Goals: * Improve the success rate of converting detected slots into confirmed bookings * Optimize performance and response time of the slot-capture logic * Improve handling of high-traffic situations and concurrent attempts * Review and refine the algorithm or request handling for better efficiency * Ensure stability without breaking the existing working system Important Notes: * The bot is already working; this is mainly a performance optimization task * Only a specific portion of the code needs improvement * The rest of the system should remain unchanged Preferred Experience: * Strong experience with BOT automation * Experience with performance optimization, concurrency, and network requests, Reverse Engineering * Familiarity with web automation frameworks (Playwright / Selenium / Requests / Asyncio) Project Scope: * Code review of the slot-capture logic * Suggestions for improving efficiency * Implementation of optimized logic If you have experience improving performance in automation systems under heavy load, feel free to apply and share relevant experience. I'm happy to work with experienced developers who can quickly identify bottlenecks and improve the system. The main file is also attached, check it read it and let me know what you understand from it, generic proposal will be ignored. Hourly rate: 30 - 60 USD 1 day ago Client's recent history (1 work) Project Up & Running To freelancer: 5 Mahmudul took full ownership of the project and successfully set up our existing Flutter source code without issues. He … Mahmudul took full ownership of the project and successfully set up our existing Flutter source code without issues. He quickly resolved dependency and configuration problems and ensured the application was running smoothly. Communication was clear, professional, and proactive throughout the process. Highly recommended for Flutter projects. To client: 5 It was a pleasure working with this client. Communication was clear, and requirements were well explained. Very cooperat… It was a pleasure working with this client. Communication was clear, and requirements were well explained. Very cooperative and responsive throughout the project. I would definitely be happy to work together again. Feb 2026 - Feb 2026 Web, Mobile & Software Dev, Scripts & Utilities Open project
KK-82MS Pin Mapping Analysis Applied	~35 - 289 USD	1 day ago	Client Rank - not enough data -
I need the internal circuitry of the KK-82MS scientific calculator documented so I can design a drop-in replacement PCB. Your job is to open the unit, trace every relevant signal, and give me a clear map of what connects where. The focus is on both LCD behaviour and the button-scanning scheme, so I expect you to show how each LCD segment is driven, which pins act as commons, how the microcontroller multiplexes them, and the exact keyboard matrix rows and columns the processor polls. Feel free to combine a logic analyser, multimeter, oscilloscope, or any other bench tool you trust; choice of instrumentation is up to you as long as the final data are unambiguous. Deliverables • High-resolution photos of the calculator fully disassembled, including close-ups of the flex cables and IC markings • A labelled LCD pinout table and concise explanation of its driving method (e.g., static/multiplex ratio, bias levels) • A complete diagram of the key matrix with pin numbers and scan order • Short technical report (PDF or Google Doc) summarising methodology, observations, and conclusions, referenced to the photos I will review by reproducing the mapping on my prototype board, so accuracy is essential; unclear pins or unanswered questions will be sent back for clarification. Skills: Electronics, Microcontroller, Electrical Engineering, PCB Layout, Circuit Design, Embedded Systems, PCB Design and Layout, Prototyping, Technical Documentation, Reverse Engineering Fixed budget: 30 - 250 EUR 1 day ago Websites, IT & Software, Writing & Content, Engineering & Science, Electronics, Microcontroller, Electrical Engineering, PCB Layout, Circuit Design, Embedded Systems, PCB Design and Layout, Prototyping, Technical Documentation, Reverse Engineering Open project
Senior Backend Developer to Take Over Twilio/Notion Calling System (Reverse Engineering Required) Applied	not specified	1 day ago	Client Rank - Excellent Payment method verified $33 228 total spent 70 hires, 1 active 423 jobs posted 17% hire rate, 13 open job 9.89 /hr avg hourly rate paid 1 966 hours paid 4.94 of 63 reviews Industry: Retail & Consumer Goods Company size: 2 Registered: Oct 27, 2017 Netherlands Kerkdriel 07:48 5
We are looking for an experienced backend developer to take over an existing calling system built with Node.js, Twilio and Notion. The system is currently running on Render, but the previous developer disconnected his GitHub repository, so we no longer have the original backend source code. What we do have: Full Render infrastructure access Environment variables PostgreSQL database Twilio + Notion API integrations Chrome extension frontend (JS files / zip) Your job will be to: Analyze the running system Stabilize existing issues Recreate or recover backend logic if needed Move everything into our GitHub Secure credentials and document the architecture Tech Stack Node.js Twilio Programmable Voice PostgreSQL Render Notion API Chrome Extension Looking For someone experienced with: Node.js backends Twilio voice APIs reverse engineering existing systems debugging live infrastructure Deliverables Clean backend repo in our GitHub Stable calling system Deployment pipeline Basic documentation Bonus Experience with: Chrome extensions Notion API DevOps / Render Budget: not specified 1 day ago Client's recent history (50+ works) Design a Compact Multilingual User Manual and Installation guide No feedback given Nov 2025 Twilio + Next.js Automated Lead Management System To freelancer: 5 To client: 5 I worked with him again and it was really nice to work with. Oct 2025 - Nov 2025 16 hrs @ $28.17/hr Billed: $450.79 Integration Developer Needed: Click-to-Call, Auto-Dialer & Voicemail Drop (Trengo + Twilio) To freelancer: 5 I had the pleasure of working with this freelancer on a project to build a Twilio click-to-call Google Chrome extension,… I had the pleasure of working with this freelancer on a project to build a Twilio click-to-call Google Chrome extension, and I couldn’t be happier with the results. They fully understood the requirements from the beginning, communicated clearly throughout the process, and delivered a solution that worked flawlessly. The extension was built with attention to detail, clean code, and excellent functionality. Everything worked exactly as expected right from the start, with no issues or delays. What really stood out was their professionalism, responsiveness, and ability to translate complex requirements into a smooth, user-friendly product. If you’re looking for someone reliable, skilled, and dedicated to delivering high-quality work, I highly recommend this freelancer. They exceeded expectations and made the whole experience stress-free. To client: 5 Jan is an excellent client to work with. He communicated clearly, provided all the necessary information upfront, and wa… Jan is an excellent client to work with. He communicated clearly, provided all the necessary information upfront, and was very respectful throughout the project. It was a pleasure collaborating with him, and I would be happy to work with him again anytime. Highly recommended! Sep 2025 - Oct 2025 FIXED $500.00 Norwegian sales employee To freelancer: 5 To client: 5 Dec 2024 - Sep 2025 FIXED $5.00 proofread and optimize website ( 3 pages) in a document To freelancer: 5 To client: 5 Sep 2024 - Sep 2025 FIXED $33.00 Native French Copy Expert for E-commerce Product Page Review To freelancer: 5 To client: 5 Apr 2025 - Sep 2025 FIXED $125.00 Design a Compact Multilingual User Manual and Installation guide To freelancer: 5 Aug 2025 - Sep 2025 FIXED $240.00 Redesign Above‑the‑Fold Section of E‑commerce Product Page To freelancer: 5 To client: 5 It was a pleasure working with Jan. Everything went smoothly and clearly, with quick feedback and instructions. The whol… It was a pleasure working with Jan. Everything went smoothly and clearly, with quick feedback and instructions. The whole process took place in a wonderful atmosphere with excellent communication. I definitely recommend him and look forward to future joint projects. Aug 2025 - Sep 2025 7 hrs @ $28.30/hr Billed: $193.39 Design a Compact Multilingual User Manual and Installation guide To freelancer: 5 Aug 2025 - Sep 2025 5 hrs @ $29.84/hr Billed: $149.18 Marketing Services To freelancer: 5 To client: 5 Aug 2025 - Sep 2025 FIXED $50.00 Data Automation Specialist – Connect Twilio, Trengo, Shopify & Notion into Google Sheets To freelancer: 5 To client: 5 Thanks, Aug 2025 - Sep 2025 25 hrs @ $12.55/hr Billed: $309.64 Shopify Theme Bug – Need Urgent Fix Today To freelancer: 5 To client: 5 Aug 2025 - Aug 2025 6 hrs @ $17.40/hr Billed: $110.22 Native UK English Copy Expert for E-commerce Product Page Review To freelancer: 5 To client: 5 Great experience working with Jan. Apr 2025 - Jun 2025 FIXED $90.00 2x ugh voice over + subs No feedback given Nov 2024 - Dec 2024 FIXED $56.00 Need AI expert to create me some images To freelancer: 5 To client: 5 Jan communicated his vision clearly and was always prompt with feedback. Aug 2024 - Aug 2024 FIXED $40.00 Spreadsheet Finance To freelancer: 5 To client: 5 Clear requirements and due availability. Thanks Man !! Apr 2024 - Apr 2024 6 hrs @ $9.25/hr Billed: $53.95 Looking for a professional Proofreader To freelancer: 5 outstanding experience, really good proofreader To client: 5 I had the pleasure of collaborating with Jan on a recent project, and I must say, the experience was exceptionally posit… I had the pleasure of collaborating with Jan on a recent project, and I must say, the experience was exceptionally positive. Jan's professionalism and reliability were evident from the outset. He demonstrates a high level of commitment to his work, making the entire process smooth and efficient. Working with Jan was a delight, and I eagerly look forward to the opportunity of joining forces with him again. Highly recommended! Mar 2022 - Apr 2024 FIXED $5,153.92 Dynamic product content To freelancer: 5 To client: 5 Dec 2023 - Apr 2024 35 hrs @ $15.84/hr Billed: $546.33 Make listing images for my brand To freelancer: 5 To client: 5 I enjoyed working on the Shopify product listing for Jan, and he is also a good client. Mar 2024 - Mar 2024 FIXED $180.00 Need an EXCEL/SPREADSHEET expert to make some tables/figures for me To freelancer: 5 Best experience ever! Virang is fact with the communication and delivers even faster. Truly an Excel expert To client: 5 Jan 2024 - Jan 2024 8 hrs @ $37.11/hr Billed: $303.08 Dropshipping Shopify Paypal/Klarna dispute management No feedback given Nov 2023 - Dec 2023 4 hrs @ $9.24/hr Billed: $32.35 Need Shopify coder expert in a hurry To freelancer: 5 To client: 5 Oct 2023 - Dec 2023 5 hrs @ $21.59/hr Billed: $107.95 Looking for someone that can make a e-commerce Funnelish setup To freelancer: 5 To client: 5 Clear instructions and smooth communication Oct 2023 - Dec 2023 6 hrs @ $19.39/hr Billed: $116.35 Looking for a notion expert No feedback given To client: 2.4 Sep 2023 - Nov 2023 FIXED $150.00 URGENT! Black Friday e-mail designer To freelancer: 5 To client: 5 Working with Jan has been great. He was very clear with his objectives and gives clear instructions. He also provide tim… Working with Jan has been great. He was very clear with his objectives and gives clear instructions. He also provide timely feedback. Given the chance, we will be delighted to work with him again. Nov 2023 - Nov 2023 FIXED $400.00 Help me post review if you are from Spain / France /Italy / Germany To freelancer: 5 Oct 2023 - Oct 2023 FIXED $5.00 Need a professional shopify coder To freelancer: 5 To client: 5 Thank you so much. Sep 2023 - Oct 2023 15 hrs @ $15.95/hr Billed: $239.20 Need private shopify coder To freelancer: 5 To client: 5 Sep 2023 - Sep 2023 7 hrs @ $16.17/hr Billed: $113.20 Need to connect a german landline phone number to Twilio To freelancer: 5 To client: 5 Sep 2023 - Sep 2023 FIXED $50.00 Looking for an UI UX / Figma design for my e-commerce website To freelancer: 5 Dharmesh is the best ever, really good in communicating and he understands the proces fairly easy. We only needed 1 feed… Dharmesh is the best ever, really good in communicating and he understands the proces fairly easy. We only needed 1 feedback round to finalize the designs, really happy with the result. To client: 5 Working with Mr. Jan is very enjoyable. Communication was always fast and clear, and highly professional throughout the … Working with Mr. Jan is very enjoyable. Communication was always fast and clear, and highly professional throughout the project. May 2023 - Jun 2023 FIXED $800.00 Shopify edits To freelancer: 5 To client: 5 Feb 2023 - May 2023 29 hrs @ $15.75/hr Billed: $459.38 Looking for a personal Shopify Developer To freelancer: 5 Jan 2023 - Feb 2023 7 hrs @ $15.75/hr Billed: $102.38 In need of Google and Facebook Retargeting! To freelancer: 5 To client: 5 Jan 2023 - Feb 2023 7 hrs @ $8.40/hr Billed: $58.80 Shopify Product lister To freelancer: 5 To client: 4.7 Thanks Jan! Jan 2023 - Feb 2023 30 hrs @ $5.25/hr Billed: $157.50 Need a high converting shopify website To freelancer: 5 To client: 5 very good client. thanks Jan 2023 - Feb 2023 10 hrs @ $12.60/hr Billed: $126.00 Create product listing images To freelancer: 5 To client: 5 Thankyou Jan, It was a great experience working on your pet product. We are always available for any kind of work Jan 2023 - Feb 2023 12 hrs @ $21.00/hr Billed: $252.00 Multiple simple One Product Store maker Shopify To freelancer: 5 Very good work, thanks! To client: 3 Dec 2022 - Jan 2023 28 hrs @ $12.60/hr Billed: $350.70 Re-design an offer page and implement in shopify To freelancer: 5 Amazing work! To client: 4 Jan 2023 - Jan 2023 10 hrs @ $21.00/hr Billed: $210.00 Re-design an offer page and implement in shopify To freelancer: 5 To client: 5 Jan 2023 - Jan 2023 10 hrs @ $11.08/hr Billed: $110.78 Looking for E-commerce Woocommerce website To freelancer: 5 To client: 5 Nice Client Oct 2022 - Jan 2023 5 hrs @ $13.65/hr Billed: $70.53 Looking for a WooCommerce E-commerce Developer To freelancer: 5 Upwork specialist is very good. Best communication I have seen in my 3 years on Upwork. Does the job that he tells he do… Upwork specialist is very good. Best communication I have seen in my 3 years on Upwork. Does the job that he tells he does To client: 5 Oct 2022 - Nov 2022 FIXED $841.00 Create stunning Brand logo and Identity To freelancer: 5 To client: 4.4 Feb 2022 - Oct 2022 FIXED $60.00 Create stunning Brand logo and Identity To freelancer: 5 To client: 3 Feb 2022 - Oct 2022 FIXED $60.00 Create stunning Brand logo and Identity To freelancer: 5 To client: 5 Good Client :) Feb 2022 - Oct 2022 FIXED $200.00 Looking for a professional Proofreader To freelancer: 5 To client: 5 Great to work for, easy communication, and clear instructions. Very professional. It has been a pleasure working for Jan… Great to work for, easy communication, and clear instructions. Very professional. It has been a pleasure working for Jan! Mar 2022 - Oct 2022 FIXED $1,298.11 Need a Shopify - Translation plugin Development professional To freelancer: 5 To client: 5 Apr 2022 - Sep 2022 9 hrs @ $15.00/hr Billed: $127.50 Re-design my logo and website colors To freelancer: 5 To client: 3.9 Unfortunately had not very pleasant experience with this client. We agreed, that I will make more work for additional pa… Unfortunately had not very pleasant experience with this client. We agreed, that I will make more work for additional payment, also I was ok he will add another milestone after work is done, but my trustfulness worked against me. I was not paid for worked done. Jun 2022 - Sep 2022 FIXED $200.00 Looking for a professional website designer To freelancer: 5 To client: 5 Thank you Mar 2022 - Jun 2022 FIXED $200.00 Graphic Designer Product Pages No feedback given To client: 5 Thank you for the opportunity. Definitely will work again.... Jan 2022 - Mar 2022 5 hrs @ $15.00/hr Billed: $70.00 Create amazing e-mail html design To freelancer: 5 To client: 5 Great Experience! Pleasure to work with him! We work together again! Feb 2022 - Feb 2022 FIXED $100.00 View more (48) Web, Mobile & Software Dev, Web Development Open project
Precast Concrete Mould Reverse Engineering Applied	~178 - 535 USD	1 day ago	Client Rank - not enough data -
I have a finished, load-bearing concrete element in hand—a straightforward rectangular shell — and I need a complete mould design so I can cast identical pieces at scale. Your task starts with accurately capturing the dimensions of the sample drawings, then transforming that data into a clean 3D model and detailed shop drawings to create suitable for precast production mould. Because the geometry is simple, the real focus is on precision: edge radii, chamfers, lifting-hook recesses, and any tolerance that keeps the piece structurally sound once installed. I’ll rely on you to specify mould materials, release angles, and reinforcement of the mould itself so it withstands repeated pours. Deliverables • 3D CAD file (STEP or SolidWorks native) matching the original element • 2D fabrication drawings (PDF) with all critical dimensions and tolerances • Brief notes on mould assembly, stripping sequence, and recommended concrete mix design considerations I typically work in AutoCAD and SolidWorks, so files compatible with either of those will slot straight into our workflow, but I’m flexible if you prefer Inventor, Revit, or similar—just let me know. The job will be considered complete when the factory Production Manager can pick up your drawings, manufacture the steel inner and outer moulds without RFI’s, and hit dimensional targets within ±2 mm on the first pour. Skills: CAD/CAM, Solidworks, Mechanical Engineering, AutoCAD, Manufacturing Design, 3D Design, 3D CAD, 3D Drafting, Precast Designer Fixed budget: 250 - 750 AUD 1 day ago Design, Media & Architecture, Engineering & Science, 3D Design, CAD/CAM, Solidworks, Mechanical Engineering, AutoCAD, Manufacturing Design, 3D Drafting, 3D CAD, Precast Designer Open project
[FULL-TIME SOLIDWORKS] Component Modeling Applied	$3 - $25 / hr	2 days ago	Client Rank - Excellent Payment method verified Phone number verified $28 483 total spent 8 hires, 22 active 8 jobs posted 100% hire rate, 2 open job 5.00 of 2 reviews Registered: Nov 13, 2025 United States Cambridge 01:48 5
SolidWorks Modeling – Industrial Component Design (Based on Reference Assemblies) We're looking for an experienced SolidWorks modeler to design industrial machine components based on reference STEP file assemblies we provide. The Work: You'll receive complex machine assembly STEP files and use them as reference to model functionally equivalent components in SolidWorks. These are not exact reverse-engineering jobs — we need parts that serve the same purpose and fit the same interfaces, but with your own clean modeling approach and minor design variations. Think of it as "design-to-fit" rather than "copy exactly." Requirements: Strong proficiency in SolidWorks (full commercial license only — no Maker or educational licenses) Experience working with large, multi-part industrial assemblies Ability to import and navigate complex STEP files, take measurements from them, and understand how parts interface with one another Solid understanding of manufacturing constraints and standard industrial design practices Comfortable making judgment calls on fillets, tolerances, wall thicknesses, and similar details where the reference geometry is a guide, not a spec Nice to Have: Background in machine design, automation equipment, or heavy industrial components Experience with sheet metal, weldments, or casting/forging design in SolidWorks What We Provide: STEP assembly files for reference Notes on which components need to be modeled and any specific dimensional constraints or interface requirements Feedback and iteration as needed Deliverables: Native SolidWorks part and assembly files (.sldprt / .sldasm) Exported STEP files of finished models This is an ongoing relationship for the right person — we have a steady pipeline of components that need this treatment. Please include examples of industrial parts you've modeled in SolidWorks when you apply. BASE RATE: $3/component - some simple, some more complex, on average not too complex Hourly rate: 3 - 25 USD 2 days ago Client's recent history (14 works) Jobs in progress (11) Consumer Kitchen Electronics Design in Siemens NX Feb 2026 - Present Generate Design Variants in Siemens NX Feb 2026 - Present [MONTH-LONG FULL TIME] Siemens NX, Automotive, Parametric Modeling Jan 2026 - Present Generate Design Variants in Siemens NX Jan 2026 - Present FIXED $1,650.00 Generate Design Variants in Siemens NX Jan 2026 - Present Generate Design Variants in Siemens NX Jan 2026 - Present FIXED $1,500.00 Generate Design Variants in Siemens NX Jan 2026 - Present FIXED $5.50 [MONTH-LONG FULL TIME] Siemens NX, Automotive, Parametric Modeling Jan 2026 - Present FIXED $1,650.00 [MONTH-LONG FULL TIME] Siemens NX, Automotive, Parametric Modeling Dec 2025 - Present FIXED $1,080.00 Automotive and Aerospace Assembly Variants Generation Dec 2025 - Present FIXED $4,480.00 Automotive and Aerospace Assembly Variants Generation Nov 2025 - Present FIXED $2,644.00 View more (6) [MONTH-LONG FULL TIME] Siemens NX, Automotive, Parametric Modeling No feedback given Nov 2025 Consumer Electronics Reverse Engineering in NX To freelancer: 5 Gajanand is a great modeler with a solid grasp on Siemens NX! Very communicative. To client: 5 Excellent client to work with. The project requirements were clearly structured, and technical discussions were producti… Excellent client to work with. The project requirements were clearly structured, and technical discussions were productive and efficient. Decisions were made quickly, which helped maintain strong momentum throughout the project. Highly professional and respectful collaboration — would gladly work together again. Dec 2025 - Feb 2026 FIXED $1,375.00 [MONTH-LONG FULL TIME] Siemens NX, Automotive, Parametric Modeling To freelancer: 5 To client: 5 It was great environment working with him . His communication is top-notch—always responsive, professional, and collabor… It was great environment working with him . His communication is top-notch—always responsive, professional, and collaborative. He has a deep understanding of the project goals, making the entire process smooth and efficient. I am also very appreciative of his punctuality regarding payments. I look forward to our next collaboration! Thank You.!! Dec 2025 - Jan 2026 FIXED $1,189.75 View more (1) Engineering & Architecture, 3D Modeling & CAD Open project
Reverse engineering KK-82MS calculator for LCD and button pin mapping Applied	$100	2 days ago	Client Rank - Medium Payment method verified Phone number verified 1 open job no reviews Registered: Mar 11, 2026 Ukraine Odesa 07:48 3
I am looking for a hardware / embedded engineer to reverse engineer a KK-82MS calculator. I will send the physical calculator to the freelancer. The goal is to disassemble the calculator and identify the LCD pin mapping and button / keyboard matrix pin mapping so I can use this information for designing my next custom PCB. What I need as the final result: LCD pinout / pin mapping button pin mapping or keyboard matrix mapping short explanation of how the LCD works short explanation of how the buttons are connected and scanned photos of the disassembled calculator simple technical report in PDF or Google Doc Fixed budget: 100 USD 2 days ago Web, Mobile & Software Dev, Web Development Open project
Fix Patched Game Client Offsets and Address and Packets Applied	$250 - $750	2 days ago	Client Rank - not enough data -
The latest patch wiped out every pointer offset my companion app relies on, so most of its memory reads now return garbage and several packet handlers no longer align with the game’s updated structures. I need an expert who can jump straight into the new build, reverse the changed layouts, and hand back corrected offsets (and any packet-structure tweaks you discover) so the tool is fully functional again. Here’s what success looks like for me: • A clean list of updated base addresses, dynamic offsets, and any changed pointer chains tested on the current live client. • Confirmation that each fix restores the original in-game features of my app without crashes or desync. • A brief summary of any packet format adjustments you uncover while tracing traffic so I can patch that layer too. I’m only interested in freelancers with solid game reverse-engineering credentials—memory analysis and networking/packet analysis experience are essential for this job. Please send a concise but detailed proposal outlining your approach, preferred tools, and a rough timeline. The sooner this is turned around, the better. Skills: C Programming, Game Design, Computer Security, C# Programming, C++ Programming, Game Development, Game Testing, Reverse Engineering Fixed budget: 250 - 750 USD 2 days ago Websites, IT & Software, Sales & Marketing, Business, Accounting, Human Resources & Legal, Game Design, Computer Security, C# Programming, C++ Programming, Game Development, Game Testing, Reverse Engineering Open project
Reverse Engineer Legacy Game Patch Applied	$30 - $250	2 days ago	Client Rank - not enough data -
A recent patch on my PC game has shifted several memory addresses, pointers and a few packet structures that my existing tools rely on. Since the update went live the core gameplay logic they hook into no longer fires, so I can’t read or write the data I need. I already have the old working offsets, a minimal DLL and sample packet dumps for reference; what I’m missing are the new locations and any structural changes introduced by the patch. You’ll need to open the latest build, locate the correct functions or data structures, update the pointer chain and packet definitions, and hand back something I can drop straight into my codebase. What I’m expecting from you • A list (or header file) of updated addresses, offsets and pointer paths • Revised packet layout with field names, sizes and order • A short note on how you found the changes so I can replicate the process next time The job is complete when the hooks once again manipulate the live gameplay mechanics exactly as before, with no crashes or desyncs. IDA, Ghidra, Cheat Engine, x64dbg—use whichever toolkit you prefer, as long as the final results are solid and repeatable. Skills: C Programming, C# Programming, C++ Programming, Debugging, x86/x64 Assembler, Software Development, Game Development, Reverse Engineering Fixed budget: 30 - 250 USD 2 days ago Websites, IT & Software, Sales & Marketing, C# Programming, C++ Programming, Debugging, x86/x64 Assembler, Software Development, Game Development, Reverse Engineering Open project
Golf Grip trainer Applied	not specified	2 days ago	Client Rank - Medium Payment method verified 2 jobs posted 1 open job no reviews Registered: Aug 10, 2022 Canada 03:48 3
I have a clip on golf grip trainer that I have already had 3d scanned into a .stl file. I'd like to keep the ergonomics the same for the exact same hand feel. Maybe a small few visual tweaks to have it slightly different in terms of appearance. I have tested the product already and found the it slides on the golf grip too much.. so a solution to stop the slide would be ideal. The product seems to twist quite a bit as well... so creating some anti twist resistance in the endoskeleton would be amazing. Budget: not specified 2 days ago Engineering & Architecture, 3D Modeling & CAD Open project
Convert .ekr Files to Binary Files Applied	$20 - $40 / hr	2 days ago	Client Rank - Good Payment method verified $3 687 total spent 8 hires, 6 active 11 jobs posted 73% hire rate, 1 open job 22.18 /hr avg hourly rate paid 145 hours paid 5.00 of 3 reviews Industry: Manufacturing & Construction Company size: 100 Registered: Jan 29, 2023 South Korea Hwaseong-si, Gyeonggi-do 15:48 4
We are seeking a skilled freelancer with experience in converting .ekr files into binary files. The ideal candidate should have a strong understanding of file conversion processes and the technical expertise to handle these specific file types. If you have a proven track record in similar projects and can deliver high-quality results efficiently, we would love to hear from you. Please include your relevant experience and any tools you plan to use in your application. Hourly rate: 20 - 40 USD 2 days ago Client's recent history (8 works) Jobs in progress (3) Business Development Support for Japanese Market Feb 2026 - Present 1 hrs @ $0.00/hr Video Editing Specialist for Automotive Content Creation Mar 2025 - Present 26 hrs @ $16.54/hr Billed: $429.99 Executive Assistant Apr 2023 - Present 21 hrs @ $27.70/hr Billed: $586.26 View more (-2) Assistant - Korea - HABE No feedback given Apr 2023 7 hrs @ $23.10/hr Billed: $150.15 Assistant - Korea - M.Tech Kr No feedback given Mar 2023 73 hrs @ $24.31/hr Billed: $1,774.50 Video, Audio Editing Expert Needed — Reels, Shorts No feedback given To client: 5 Alex is an excellent client! Everything was agreed upon quickly and easily. He was always in touch, which made the proje… Alex is an excellent client! Everything was agreed upon quickly and easily. He was always in touch, which made the project a success. Thank you, Alex, for the project — I’ll be happy to work together again next time! Oct 2025 - Oct 2025 2 hrs @ $28.75/hr Billed: $57.49 Audio Specialist Needed for In-Car Video Editing To freelancer: 5 Amazing work and on time, he solved Audio issues that no-one else could do. To client: 5 Alex is a great client! — highly recommended. We quickly agreed on all the details and completed the project without any… Alex is a great client! — highly recommended. We quickly agreed on all the details and completed the project without any issues. Thank you, Alex! Sep 2025 - Oct 2025 10 hrs @ $28.06/hr Billed: $280.62 Video Editing Specialist for Automotive Content Creation No feedback given To client: 5 Great Client! Very friendly and polite. Mar 2025 - Sep 2025 5 hrs @ $14.60/hr Billed: $72.99 View more (3) Admin Support, Data Entry & Transcription Services Open project
Product Manufacturing design Applied	not specified	2 days ago	Client Rank - Medium Payment method verified Phone number verified 1 open job Romania 08:48 3
We are building a minimalist AI voice bracelet wearable device and we need an experienced industrial/product designer to create the official manufacturing-ready design. The device will be a compact wrist wearable (no display) with a premium design: aluminum top shell, PC+ABS bottom shell, and a side speaker grille. The product must look modern, minimal, and suitable for mass production. Our current concept is already defined, and we will provide reference images, approximate dimensions, and the internal components that must fit inside the device. The goal is to transform the concept into a clean industrial design with proper internal layout and deliver 3D CAD files ready for manufacturing. We are looking for someone with experience in consumer electronics or wearable product design. If the collaboration goes well, we are open to a long-term partnership for future hardware products. Budget: not specified 2 days ago Engineering & Architecture, Energy & Mechanical Engineering Open project
Nano Applied	not specified	2 days ago	Client Rank - Medium Payment method verified 1 jobs posted 1 open job no reviews Industry: Sales & Marketing Individual client Registered: Oct 17, 2025 United States 01:48 3
It’s a 33x34mm case for a portable carbon monoxide detector . Something like my mockups I want it to look but I’m not sure on the vents since it is a co detector . Budget: not specified 2 days ago Engineering & Architecture, Energy & Mechanical Engineering Open project
Reverse Engineering for USB License Dongle Software Applied	$50	2 days ago	Client Rank - Excellent Payment method verified Phone number verified $1 863 total spent 28 hires, 13 active 38 jobs posted 74% hire rate, 19 open job 4.98 of 12 reviews Registered: Dec 31, 2024 United States Illinois 11:48 5
Looking for an experienced developer to analyze a program that uses a USB license dongle for authentication. I need help understanding how the software interacts with the dongle during startup and operation, and guidance on modifying or configuring it for testing purposes. Program will be shared after hiring. Experience with reverse engineering and Windows software analysis is preferred. Fixed budget: 50 USD 2 days ago Client's recent history (21 works) Jobs in progress (8) LaTeX Conversion for Academic Paper Mar 2026 - Present PWA MVP – Chronological Photos Feb 2026 - Present FIXED $35.00 Composite Deck Structural Drawings Feb 2026 - Present Simple SaaS Landing Page & Branding Feb 2026 - Present Global Freelance Recruiter for Job-Posting Jan 2026 - Present FIXED $270.00 Build Simple Website With Booking & Payment Nov 2025 - Present FIXED $200.00 Python Developer Needed for Bitget Trading Bot Adjustments Nov 2025 - Present FIXED $65.00 Enhance .NET Excel Integration Nov 2025 - Present FIXED $70.00 View more (3) As discussed No feedback given Dec 2025 FIXED $40.00 Architectural 2D AutoCAD Floor Plans No feedback given Mar 2026 - Mar 2026 FIXED $35.00 PHP Expert to fixed a small bug now To freelancer: 5 You did amazing work . To client: 5 I enjoyed working on this project. All expectations and requirements were communicated up front and the client was respo… I enjoyed working on this project. All expectations and requirements were communicated up front and the client was responsive to any of my requests for clarification. I liked working with her and hope to have the opportunity to work with her again. Feb 2026 - Feb 2026 FIXED $10.00 Notion Life Operating System Design To freelancer: 5 Thanks............... To client: 4.55 Looking forward to working with him again! Feb 2026 - Feb 2026 FIXED $30.00 Launch Google Ads Campaign To freelancer: 5 Everything worked perfectly. To client: 5 Easy to communicate. Awesome client to work with :) Feb 2026 - Feb 2026 FIXED $30.00 Migrate WIX to GoDaddy (Simple Job) To freelancer: 5 Thanks amazing work To client: 5 Looking forward working again. Feb 2026 - Feb 2026 Grading & Site Plan for Commercial Lot To freelancer: 5 Excellent experience working with this freelancer. He is professional, responsive, and committed to delivering great res… Excellent experience working with this freelancer. He is professional, responsive, and committed to delivering great results. The work was well done and on time. Highly recommended for anyone looking for a serious and skilled professional. To client: 5 Great experience working with the client. The client was very helpful and responsive at every stage. Closing this Contra… Great experience working with the client. The client was very helpful and responsive at every stage. Closing this Contract as the work complete successfully and now starting the next project. Jan 2026 - Feb 2026 FIXED $200.00 Automated 1iota Ticket SMS Alert To freelancer: 5 He is amazing . He is best To client: 5 Feb 2026 - Feb 2026 New Book Launch – Press Release Publishing Request To freelancer: 5 To client: 5 Professional and reliable, looking forward to more work Jan 2026 - Feb 2026 Clone WordPress Site 4 Times + Connect Domains To freelancer: 5 Thanks a lot . YOu Did best To client: 5 Working with Entrio has been an excellent experience. His communication was clear, requirements were well-defined, and h… Working with Entrio has been an excellent experience. His communication was clear, requirements were well-defined, and he was always available to provide feedback when needed. The collaboration was smooth from start to finish, and I would be happy to work with them again. Nov 2025 - Nov 2025 woocommerce migration To freelancer: 5 Amazing Amazing Amazing . Best best To client: 5 Sep 2025 - Sep 2025 FIXED $55.25 Simple Order Submission Page with Admin No feedback given To client: 5 Aug 2025 - Aug 2025 FIXED $10.00 Simple Order Submission Page with Admin To freelancer: 5 Amazing Job from Irfan. Thanks for your professionality Irfan and Team. If we need any other requirement we definitely w… Amazing Job from Irfan. Thanks for your professionality Irfan and Team. If we need any other requirement we definitely will count on you guys! To client: 5 Jul 2025 - Aug 2025 FIXED $50.00 View more (11) Web, Mobile & Software Dev, Desktop Application Development Open project
Senior Penetration Tester for AWS/K8s Backend Intrusion Applied	$1,500	3 days ago	Client Rank - Risky Payment method not verified Phone number verified 1 open job France 07:48 1
Authorized penetration test against a production backend. We need a senior specialist to achieve internal network access. This is NOT a scan-and-report job. We need someone who thinks in attack chains and understands how these systems break. STACK: • Akamai WAF • AWS (EKS, RDS PostgreSQL, S3, CloudFront) • Kong API Gateway (custom Lua auth plugins) • Django / Gunicorn / Celery • Kubernetes (50+ microservices) • Redis • Pillow (server-side image processing) • Android/iOS mobile apps (Retrofit APIs, WebView bridges) • Tencent Cloud VOD, Agora RTC, Cloudinary, Socket.IO SKILLS NEEDED: • AWS infrastructure pentesting (EKS, IAM, IMDS, Secrets Manager) • Kong API Gateway exploitation • SSRF (blind + response-visible, redirect chains, DNS rebinding) • Akamai WAF bypass • Django internals • Python exploit development • HMAC/JWT cryptographic attacks • Kubernetes lateral movement • PostgreSQL exploitation • Image processing CVEs (Pillow/libwebp) • WordPress pentesting (bonus) • Android reverse engineering (bonus) • Credential reuse from breach databases (bonus) In your proposal, tell us: 1. Your experience with similar stacks 2. One creative attack idea based on the stack above Fixed budget: 1,500 USD 3 days ago IT & Networking, Information Security & Compliance Open project
Scan to CAD Applied	not specified	3 days ago	Client Rank - Risky Payment method not verified Phone number verified 1 open job no reviews Registered: Mar 11, 2026 Ecuador 01:48 1
Reverse engineering of car interior door handle from 3D scan (STL to CAD) Job Description I have a 3D scan (STL mesh) of an internal car door handle / door pull trim piece and I need to convert it into a clean parametric CAD model. The goal is to reconstruct the part so it can be manufactured with 3D printing Budget: not specified 3 days ago Engineering & Architecture, 3D Modeling & CAD Open project
Motherboard Reverse-Engineering & Redesign Applied	~2,012 - 4,024 USD	3 days ago	Client Rank - not enough data -
The original schematics and firmware sources for my existing motherboard are no longer available, yet I still need to keep the product alive and solve a series of recurring hardware failures. The immediate objective is to reverse-engineer the board in detail so I have a complete, accurate picture of how every power rail, I/O interface, and embedded controller is wired and programmed. Once that knowledge is captured, I want a refreshed design that removes today’s failure points and is ready for a short production run. Work starts with non-destructive teardown, high-resolution imaging, net tracing, and firmware dumping via JTAG/SWD or any other proven technique. From there the task moves into schematic recreation (Altium Designer or KiCad preferred), BOM generation with current components, and a clean two-to-four-layer PCB layout that factors in signal integrity and thermal performance. On the firmware side, a well-commented disassembly or decompilation is expected so I can decide whether to keep, refactor, or fully rewrite the codebase. Deliverables • Complete reverse-engineered schematic in editable format • Updated BOM with second-source part numbers and lifecycle status • Optimised PCB layout files plus Gerbers, drill, and assembly outputs • Annotated firmware source or IDA Pro/Ghidra project documenting functions, registers, and boot flow • Short technical report explaining root causes of the observed hardware failures and how the new revision fixes them The board must power-up and pass the same functional tests as the current unit while eliminating the intermittent faults I see today. Design files remain my property and should be handed over in their native format at the end of the engagement. Skills: Electronics, Microcontroller, Electrical Engineering, PCB Layout, Embedded Systems, Technical Documentation, Altium Designer, Reverse Engineering Fixed budget: 1,500 - 3,000 GBP 3 days ago Websites, IT & Software, Writing & Content, Engineering & Science, Electronics, Microcontroller, Electrical Engineering, PCB Layout, Embedded Systems, Technical Documentation, Altium Designer, Reverse Engineering Open project
Reverse engineering and designing a small motherboard And programming Applied	~4,024 - 6,706 USD	3 days ago	Client Rank - not enough data -
Im designing motherboard need help designing and programming Skills: Microcontroller, Electrical Engineering, Circuit Design, Programming, Firmware, Embedded Systems, PCB Design and Layout, Reverse Engineering Fixed budget: 3,000 - 5,000 GBP 3 days ago Websites, IT & Software, Engineering & Science, Programming, Firmware, Microcontroller, Electrical Engineering, Circuit Design, Embedded Systems, PCB Design and Layout, Reverse Engineering Open project
Mobile App Penetration Tester – iOS, Android & Firebase Security Audit Applied	$30 - $50 / hr	3 days ago	Client Rank - Medium Payment method verified Phone number verified $820 total spent 3 hires, 2 active 5 jobs posted 60% hire rate, 2 open job 5.00 of 1 reviews Registered: Mar 6, 2026 United Kingdom London 06:48 3
We need an experienced penetration tester / ethical hacker to perform a comprehensive security assessment and penetration testing on our production iOS and Android mobile applications, including the Firebase backend (Firestore, Authentication, Storage, Cloud Functions, etc.). Scope: - Static & dynamic analysis of iOS and Android apps - Common mobile vulnerabilities (insecure storage, weak crypto, reverse engineering risks, etc.) - API / network traffic interception and testing - Firebase-specific misconfigurations and security issues (rules, auth bypass, data exposure, etc.) - Business logic flaws, authentication/authorization weaknesses, and injection risks Deliverables: - Detailed report with findings, severity ratings (CVSS), proof-of-concept exploits, and clear remediation recommendations Optional: re-test after fixes (separate milestone) Requirements: - Proven experience with mobile app pentesting (iOS + Android) - Strong knowledge of Firebase security best practices - Familiarity with tools like MobSF, Frida, Burp Suite, Objection, Drozer, etc. - Ability to provide sample reports or past mobile pentest experience Timeline: 1–3 weeks Please apply with: - Relevant mobile pentest experience (especially Firebase) - Your proposed methodology/approach - Any certifications (OSCP, CEH, GPEN, etc. – nice to have) Looking forward to your proposals! Hourly rate: 30 - 50 USD 3 days ago Client's recent history (2 works) Adjust Setup (Google ads + meta) No feedback given Mar 2026 Custom Notification Sound for my mobile applicaton To freelancer: 5 To client: 5 Alex was professional, had clear instructions, and great to work with. Happy to work with him again anytime! Mar 2026 - Mar 2026 FIXED $300.00 IT & Networking, Information Security & Compliance Open project
Android Login SSL Bypass & Analysis Applied	$250 - $750	3 days ago	Client Rank - not enough data -
I am looking for an experienced reverse engineer or mobile security specialist to help analyze the network communication of an Android application. The application currently implements SSL certificate pinning, which prevents traffic inspection using standard interception tools (such as proxies). Because of this, I cannot capture the login requests and related API communication. Project Goals: Perform reverse engineering of the Android APK. Identify and bypass the SSL pinning protection implemented in the app. Enable traffic inspection so the login requests can be captured and analyzed. Document the login request structure and related API endpoints. Help replicate the login request programmatically using either: Node.js, or Python The final goal is to understand how the login API works and reproduce the request flow externally in order to determine whether a user is recognized by the system (e.g., identifying existing customers vs non-customers). Additional Information: The application does not detect root when using APatch. The main challenge is bypassing the SSL pinning mechanism to inspect the login traffic. Experience with tools such as Frida, Objection, Burp Suite, HTTP Toolkit, APKTool, JADX, or similar reverse engineering tools is highly preferred. Familiarity with Android networking libraries (e.g., OkHttp, TrustManager, CertificatePinner) is a plus. Deliverables: Method used to bypass SSL pinning. Captured login request and relevant API endpoints. Working example script in Node.js or Python that replicates the login request. Please apply only if you have prior experience with Android reverse engineering and SSL pinning bypass. Skills: Java, Mobile App Development, Android, Software Architecture, Debugging, Penetration Testing, Documentation, Reverse Engineering, API Development, API Testing Fixed budget: 250 - 750 USD 3 days ago Websites, IT & Software, Mobile Phones & Computing, Business, Accounting, Human Resources & Legal, Software Architecture, Debugging, Penetration Testing, Documentation, Mobile App Development, Android, Reverse Engineering, API Development, API Testing Open project
C Software Optimization Applied	~2,012 - 4,025 USD	3 days ago	Client Rank - not enough data -
We have a legacy Windows desktop application built on .NET Framework 4 that captures video from a USB webcam using DirectShowLib-2005.dll and a custom wrapper WebCam_Capture.dll. The program works correctly on some machines but fails to recognize our Veho USB camera on others, even though the camera works in modern apps (Windows Camera app, browsers, online webcam testers). We need a freelancer to analyze, patch, and improve the camera handling logic so that the software consistently recognizes the camera across all machines. ⸻ Key Requirements / Skills: • Strong experience with .NET Framework 2.0–4.x and C# • Experience with DirectShow / video capture pipelines • Comfortable with Windows desktop apps (WinForms/WPF) • Experience with reverse engineering / decompiling .NET assemblies (tools like dnSpy, ILSpy, or .NET Reflector) • Understanding of UVC webcams, device enumeration, and video formats • Ability to modify and recompile .NET assemblies safely • Optional but helpful: experience with Media Foundation or virtual camera solutions (OBS Virtual Camera, ManyCam) ⸻ Scope of Work: 1. Analyze the program’s camera-handling logic inside WebCam_Capture.dll and the main EXE. 2. Identify the camera enumeration and selection code. 3. Patch the program so that the Veho USB camera is always recognized and selected correctly. 4. Optionally, implement a fallback or user selection for multiple camera devices. 5. Test the modified assembly to confirm it runs correctly on multiple Windows machines. Skills: C Programming, .NET, C# Programming, C++ Programming, Debugging, Software Development, Reverse Engineering Fixed budget: 1,500 - 3,000 GBP 3 days ago Websites, IT & Software, Sales & Marketing, .NET, C# Programming, C++ Programming, Debugging, Software Development, Reverse Engineering Open project
developer gezocht – dagelijkse XML product-feed van Picnic app bouwen (met toestemming, doorlopend €50/maand) Applied	~291 - 872 USD	3 days ago	Client Rank - not enough data -
De feed mag dagelijks draaien (maximaal één run per dag) en moet de data leveren in XML-formaat. De extractie moet binnen de grenzen van de verleende toestemming blijven (max. 5.000 producten totaal, geen structurele belasting). Gewenste output & structuur • Dagelijkse XML-feed (eenvoudige, schone XML-structuur; bij voorkeur RSS/Atom-compatibel of custom met -elementen). • Update-frequentie: eenmaal per dag (bijv. ’s nachts). • Verplichte velden per product: • SKU-nr (artikelnummer / internal id / product-id) • Title (volledige productnaam / omschrijving) • Foto (directe URL naar productafbeelding, bij voorkeur hoogste resolutie) • Producttype (bijv. SINGLE_ARTICLE, multipack, bundle, …) • Categorie (hoofdcategorie + subcategorie, bij voorkeur als pad of hiërarchie) • Beschikbaarheid (in stock / out of stock / limited / …) • Leverancier info (merk, EAN, leveranciernaam, herkomst indien beschikbaar) • Extra velden (indien beschikbaar en eenvoudig toe te voegen): huidige prijs (incl. eenheid), promotie-info, laatste update-tijdstip. Technische eisen • Gebruik bij voorkeur een actuele Picnic API-wrapper (bijv. python-picnic-api van MikeBrink op GitHub / PyPI). • Indien de wrapper niet stabiel of up-to-date is: reverse-engineer de benodigde endpoints via netwerkverkeer (HTTP Toolkit, mitmproxy of Proxyman) op een Android-emulator of fysiek toestel. • De freelancer maakt en gebruikt een eigen Picnic-account voor authenticatie en testing. • Implementeer robuuste rate-limiting (minimaal 2–4 seconden delay + jitter), foutafhandeling, retry-logica en logging. • Zorg dat alleen openbare productinformatie wordt verzameld – geen persoonsgegevens, ordergegevens of klantinformatie. • Na elke run: ruim alle tijdelijke data op (conform de 30-dagen-verwijderingsregel uit de toestemming). • Host de XML-feed op een betrouwbare, toegankelijke locatie (bijv. eigen server, AWS S3 met publieke link, Flask/FastAPI-endpoint met authenticatie, of vergelijkbaar). Betaling & scope • Fase 1 (eenmalig): Ontwikkeling, testen en oplevering van een werkende dagelijkse feed → vaste prijs €350–€600 (te onderhandelen op basis van ervaring en voorgestelde oplossing). • Fase 2 (doorlopend): Zodra de feed 4 weken stabiel draait (geen crashes, consistente data, correcte XML, geen schending van rate-limits of voorwaarden), schakel ik over op een maandelijkse betaling van €50 per maand voor hosting, monitoring, onderhoud en kleine aanpassingen. • Betaling via Freelancer-milestones (fase 1) en maandelijkse overschrijving/directe betaling (fase 2). Gewenste deliverables (fase 1) 1. Volledig werkend Python-script / applicatie die dagelijks automatisch draait. 2. Dagelijkse XML-output (voorbeeldbestand + live endpoint / download-link). 3. Korte documentatie: gebruikte methode, endpoints, account-setup instructies, monitoring-procedure, herstart-procedure. 4. (Optioneel maar gewaardeerd) Notificatie bij falen (e-mail of ander kanaal). Sollicitatievragen (verplicht in uw bod) 1. Heeft u ervaring met het bouwen van dagelijkse geautomatiseerde data-feeds uit mobiele apps (bij voorkeur retail/supermarkt)? 2. Heeft u ervaring met de python-picnic-api library (of vergelijkbare wrappers)? Zo ja: hoe recent en hoe stabiel? 3. Hoe plant u de authenticatie als u zelf een account moet aanmaken? 4. Welke hosting-oplossing stelt u voor de XML-feed voor (cloud, eigen server, …)? 5. Hoe lang schat u fase 1 in (ontwikkeling + testen)? 6. Bent u bereid tot een eenvoudige onderhoudsovereenkomst na stabiliteit? Alleen serieuze biedingen van developers met aantoonbare ervaring in Python, API-reverse-engineering en automatisering ontvangen een reactie. Graag relevante portfolio-items, GitHub-links of eerdere projecten meesturen. Skills: PHP, XML, Python, Data Entry, HTML, Data Extraction, API, Automation Fixed budget: 250 - 750 EUR 3 days ago Websites, IT & Software, Design, Media & Architecture, Data Entry & Admin, Translation & Languages, Python, HTML, API, Data Entry, Data Extraction, Automation Open project
C++/Unity and DLL Injection Work Applied	$40 - $80 / hr	3 days ago	Client Rank - Excellent Payment method verified Phone number verified $100 185 total spent 3 hires, 1 active 7 jobs posted 43% hire rate, 1 open job 71.40 /hr avg hourly rate paid 1 329 hours paid 5.00 of 2 reviews Registered: Nov 8, 2023 United States Phoenix 01:48 5
SEEKING FREELANCE \| REMOTE Looking for someone to build a c++ program that can read application data from running Windows applications. Looking for someone with the following: * In-depth understanding of DLLs and Windows API functions * Experience with Unity game engine * API Hooking We'd love to hear from you if you're up for the job! Client's questions: What's your favorite Texas Hold'em hand and why? Do you have any experience with the Unity game engine? Describe your recent experience with similar projects Include a link to your GitHub profile and/or website Hourly rate: 40 - 80 USD 3 days ago Client's recent history (3 works) Jobs in progress (1) C++ and DLL Injection Work Nov 2023 - Present 1,291 hrs @ $75.35/hr Billed: $97,277.12 View more (-4) C++ and DLL Injection Work To freelancer: 5 Eltion is very talented and gave us really good and clear communication as we worked through difficult problems together… Eltion is very talented and gave us really good and clear communication as we worked through difficult problems together. He was very honest and trustworthy. To client: 5 David was easy to communicate with, and work with. Unfortunately the problem was quite hard and we could not fully compl… David was easy to communicate with, and work with. Unfortunately the problem was quite hard and we could not fully complete it. I hope in the future I've a chance to work with him again. Jan 2025 - Aug 2025 3 hrs @ $55.83/hr Billed: $167.49 C++ and DLL Injection Work To freelancer: 5 Chance was a pleasure to work with. Great communication and work ethic. To client: 5 Thanks for the opportunity. Looking forward to working with him again. Dec 2024 - Dec 2024 35 hrs @ $63.29/hr Billed: $2,214.99 Web, Mobile & Software Dev, Desktop Application Development Open project

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