Are you looking for freelance java developer jobs? With Vollna, it is easy! Find the best remote Java jobs at startups and top companies. Get a personalized list of freelance java projects matching your goals and skills. Search 10000+ openings from tech's top employers. Save your time and money looking for a job on many freelance websites. Get them all in a single dashboard! Register now for free and you will not regret it!
Job Title | Budget | ||||
---|---|---|---|---|---|
Arduino Application Developer Needed
|
not specified | 9 hours ago |
Client Rank
- Risky
1 open job
6:54 AM
1
|
||
We are seeking a skilled Arduino developer to create a custom application tailored to our project needs. The ideal candidate will have hands-on experience with Arduino programming, sensors, and hardware integration. You will collaborate with our team to develop and test the application, ensuring functionality and performance meet our specifications. If you have a passion for electronics and coding, we want to hear from you!
Budget:
not specified
9 hours ago
|
|||||
Apache Guacamole Developer Needed
|
15 - 40 USD
/ hr
|
9 hours ago |
Client Rank
- Excellent
$29 759 total spent
6 hires, 4 active
6 jobs posted
100% hire rate,
1 open job
28.78 /hr avg hourly rate paid
990 hours paid
5.00
of 2 reviews
Industry: Tech & IT
Company size: 10
Registered: Apr 8, 2024
9:54 PM
5
|
||
We are seeking an experienced Apache Guacamole Developer to help us implement and customize our remote desktop solutions. The ideal candidate will have a strong understanding of Apache Guacamole, web technologies, and server configurations. You will be responsible for integrating Guacamole with our existing infrastructure to ensure secure access for our users. If you have a passion for remote access technology and possess problem-solving skills, we would love to hear from you! Knowledge of C# is required
Client's questions:
Hourly rate:
15 - 40 USD
9 hours ago
|
|||||
AWS Real-Time and Batch Processing Interview Preparation
|
5 - 20 USD
/ hr
|
8 hours ago |
Client Rank
- Excellent
$2 638 total spent
18 hires
39 jobs posted
46% hire rate,
3 open job
16.72 /hr avg hourly rate paid
36 hours paid
4.96
of 26 reviews
Individual client
Registered: Apr 22, 2019
Lawrence
1:54 AM
5
|
||
I am seeking an experienced AWS professional to assist me in preparing for an interview focused on real-time and batch processing. The ideal candidate will provide guidance on key concepts, best practices, and potential interview questions related to AWS services and data processing methodologies. Your expertise will help me build confidence and improve my understanding of the subject matter. If you have a strong background in AWS and data processing, I would love to hear from you!
Hourly rate:
5 - 20 USD
8 hours ago
|
|||||
Zoom Contact Center / Zoom Virtual Agent with Monday.com API Integration
|
not specified | 8 hours ago |
Client Rank
- Risky
4 jobs posted
5 open job
Industry: Tech & IT
Company size: 10
Registered: Feb 29, 2024
9:54 PM
1
|
||
Looking to integrate Zoom Contact Center and Zoom Virtual Agent with Monday.com.
Budget:
not specified
8 hours ago
|
|||||
Proposal Automation System Implementation Partner
|
5,000 USD | 8 hours ago |
Client Rank
- Good
$5 576 total spent
6 hires, 1 active
10 jobs posted
60% hire rate,
3 open job
24.99 /hr avg hourly rate paid
32 hours paid
5.00
of 4 reviews
Registered: Apr 22, 2020
Pearland
1:54 AM
4
|
||
We are looking for an experienced implementation partner to design and deploy a proposal automation system solution. The project will involve integration of Jira, Salesforce (SFDC), SharePoint, and Bubble.io to streamline our proposal processes. The ideal candidate will have a proven track record in system integration and automation, with strong communication skills to work collaboratively with our team. If you have expertise in these platforms and are excited about improving workflow efficiency, we want to hear from you!
Fixed budget:
5,000 USD
8 hours ago
|
|||||
FlutterFlow developer for educational mobile app (initial paid test with Firebase + UI screens)
|
not specified | 8 hours ago |
Client Rank
- Risky
1 open job
Registered: May 11, 2025
Santiago
1:54 AM
1
|
||
Dear Nihar
Hello! - My nbame is Julián Vega Adauy from Chile. - I'm developing a mobile app for teaching cardiac MRI (CMR). The app is already being designed in Figma, and I’m looking for a FlutterFlow developer to help build it. - To start, I’d like to run a paid test project that includes the development of 10 screens, all designed in Figma (delivered progressively). ** This paid test includes: Login screen (email/password + Google Sign-in using Firebase Authentication) Registration screen (with additional fields like country, profession, etc., saved in Firestore) Remote Config implementation: basic toggle (e.g., modo_gratis to allow or block access) Home screen / Main menu Language selector screen Simple content screen (text + image + video) Favorites screen (save/view content locally or in Firestore) Protocol Planner – Add sequence screen (select type, anatomy, slices, etc, View/edit sequence list, Export protocol as JSON * The Protocol Planner is a key module of the full app. It must allow adding imaging sequences (with anatomical target, number of slices, gap, etc.), saving them locally or to Firestore, and exporting the full protocol (as JSON). This version can be basic, but functional. - Requirements: You must deliver everything in FlutterFlow I need full access and control of the FlutterFlow project The app must use Firebase (Auth + Firestore + Remote Config) If this test is successful, I plan to continue with the full project (50–60 screens). Future modules include protocol sharing, favorites, diagnostic hints, and interactive content. * Please include in your proposal: Your estimated time and cost for this 10-screen test Your hourly rate or a fixed price ** Optional short meeting I’d be happy to schedule a brief video meeting to walk you through the Figma design and explain the project in more detail before we start. Thank you!! Julian Vega
Budget:
not specified
8 hours ago
|
|||||
Full Stack Web Developer to Build and Deploy AI-Driven Property Investment Platform
|
15 - 35 USD
/ hr
|
8 hours ago |
Client Rank
- Medium
1 jobs posted
1 open job
Industry: Real Estate
Company size: 2
Registered: Apr 28, 2025
Gordon Park
4:54 AM
3
|
||
We are Quantum Technologies, an Australian-based innovation company revolutionising property investment. We’ve architected a platform called Quantum Edge — an intelligent, AI-enhanced property and portfolio planning web application designed for investors, brokers, and advisors.
The platform has been fully spec'd and documented. We now require a skilled full-stack developer (or team) to bring it to life through clean, secure, scalable code — front to back. What You'll Be Building You’ll be coding and deploying a modern SaaS platform composed of: -Core Modules: Client Dashboard: Equity, cashflow, and passive income metrics Scenario Engine: Multi-year forecasting of strategies Budget Tool: Dynamic income/expenses + surplus/deficit detection AI Risk Assistant: GPT-integrated flaw and opportunity detection Quantum Academy: Gamified XP-based financial education Snapshot Generator: Monthly summary export + PDF builder CMA Tool: Automated comparable property valuations Partner Access Portals: Separate broker/conveyancer logins - Key Responsibilities: Set up project repo and environment (React.js + Flask + PostgreSQL) Code each module in line with detailed documentation and UI/UX briefs Integrate APIs (property valuation, email delivery, GHL Webhooks, optional LLM) Implement JWT auth and role-based access (admin, user, partner) Build database schema and link services using SQLAlchemy Ensure fully responsive UI (desktop/tablet/mobile) Deploy production-ready app (e.g., Vercel + AWS Lambda or Render) Write clean, modular code with proper documentation and inline comments Run tests and edge case validation before final delivery - Tech Stack: Frontend: React.js, TailwindCSS, Axios Backend: Python (Flask), REST APIs Database: PostgreSQL + SQLAlchemy (optionally Supabase) Security: JWT, bcrypt, SHA256 Hosting: Vercel, AWS Lambda, Render PDF Engine: WeasyPrint or ReportLab AI/GPT: OpenAI API (optional GPT-4 assistant) Extras: Swagger Docs, GitHub, Postman, Supabase Studio - Ideal Candidate Profile: 5+ years in full-stack development Experience building SaaS tools from scratch Able to understand and execute from detailed technical docs Familiarity with financial modelling or property tech (bonus) Strong GitHub/code portfolio Clear communicator with a structured workflow - Deliverables: Fully functional and deployed Quantum Edge platform Admin dashboard with override capabilities (for CMA and confidence scores) Swagger/API documentation GitHub repo with clean, modular commits All environment/setup instructions Final system walk-through and handover - Attachments/Docs You Will Receive Upon Hire: 100+ page technical blueprint (each module documented in full) Wireframes or UI mockups (if available) API keys and integration instructions Deployment requirements
Hourly rate:
15 - 35 USD
8 hours ago
|
|||||
[DocApp] Contract workflow web app
|
100 USD | 7 hours ago |
Client Rank
- Excellent
$27 547 total spent
295 hires, 11 active
531 jobs posted
56% hire rate,
5 open job
4.99
of 199 reviews
Industry: Finance & Accounting
Company size: 10
Registered: Sep 16, 2016
New York
12:54 AM
5
|
||
I am looking for someone to build a simple contract document workflow app. This is the first iteration of a multi iteration project
The specs can be found here: https://aiblockchain.notion.site/Licenz-214adbdf5e4f80cc94b3c5628579839e?source=copy_link The stack is React, Java, Spring Boot, Postgesql Deployment to DIgitalOcean will be required
Fixed budget:
100 USD
7 hours ago
|
|||||
Android YouTube App Development for Volvo Vehicle
|
not specified | 7 hours ago |
Client Rank
- Risky
1 open job
7:54 AM
1
|
||
We are looking for a skilled developer to create a custom YouTube application compatible with the Android-based screen of our Volvo vehicle. The app should be optimized for use while driving, ensuring safety and ease of use. The ideal candidate will have experience in mobile app development, particularly with Android systems, and a solid understanding of integrating applications with vehicle infotainment systems. Please include examples of similar projects in your proposal.
Budget:
not specified
7 hours ago
|
|||||
AWS DevOps Engineer for UK Fintech Project (Spring Boot)
|
40 - 100 USD
/ hr
|
7 hours ago |
Client Rank
- Medium
1 open job
Registered: Jan 31, 2025
5:54 AM
3
|
||
🔎 Project Snapshot
We're an early-stage UK fintech preparing for FCA authorisation. Small team, tight timeline, and a brand-new, completely empty AWS account. We need robust infrastructure foundations quickly, aligning with ISO 27001 and SOC 2 best practices. We’re open to Terraform, Pulumi, or CDK—your choice. 📌 What You’ll Build - AWS Setup – Two environments (dev & prod), IAM Identity Center, basic guardrails. - Compute – AWS Fargate cluster for a Java 17 Spring Boot monolith, ALB, autoscaling. - Database – RDS Postgres Multi-AZ (encrypted, automated backups). - Container Registry – ECR private registry, lifecycle policy, image scanning. - CI/CD – GitHub Actions pipeline: Build Java JAR → Dockerize → Push to ECR → Deploy. - Monitoring – CloudWatch dashboards & alarms (CPU, latency, error rates). - Disaster Recovery – Failover script (RTO 4h/RPO 30m), cross-region backups. - Docs – Markdown run-books, architecture diagram, and basic ISO/SOC2 control mapping. 📦 Key Deliverables - Infrastructure-as-code repo (Terraform / Pulumi / CDK – your choice). - GitHub Actions pipeline (Java build → Docker → ECR → deploy). - DR/failover scripts (with documented proof). - Run-books, architecture diagram, basic compliance-mapping. ~20-min recorded handover walkthrough. ✅ Required Skills - Deep AWS experience: Fargate, RDS, ECR, IAM, CloudWatch, KMS. - GitHub Actions: CI/CD pipelines for Java/Spring Boot apps. - Terraform, Pulumi, or AWS CDK proficiency. - Security mindset (ISO 27001 / SOC 2 experience preferred). 🔨 Paid Screening Task (~2 hrs) - Using your preferred IaC tool (Terraform, Pulumi, or CDK): - Spin up VPC (2 AZs) - Deploy simple Spring Boot (or Nginx) container on Fargate behind an ALB - RDS Multi-AZ Postgres - CloudWatch alarm triggered at 70% CPU - Provide GitHub link + IaC output. We pay for your screening time. 💷 Budget & Timing - Hourly: $40–$100 USD/hr depending on experience. - Expect ~25–30 hours total (capped at 35 hrs unless scope increases). - Daily 15-min Slack stand-up at 09:30 UK. Milestones: - 60% after infra + CI/CD pipeline live - 40% after DR, docs, and final handover Client's questions:
Hourly rate:
40 - 100 USD
7 hours ago
|
|||||
Shopify Developer – Contract (Remote, Flexible, 10+ hrs/week)
|
not specified | 7 hours ago |
Client Rank
- Risky
1 jobs posted
2 open job
Registered: Jun 9, 2025
2:54 PM
1
|
||
Odda is a specialist eCommerce development agency based in Australia, partnering with Shopify brands to deliver high-performance digital solutions. We’re seeking an experienced Shopify Developer to join our remote team on a contract basis whom is available to work Australian work hours (ADST Timezone).
Key Responsibilities: Develop and maintain custom Shopify Plus themes Build features and integrations using Shopify APIs Troubleshoot and resolve urgent store issues Communicate with clients and manage timelines Collaborate via Git, Figma, Slack, and Trello Requirements: Advanced experience with Shopify Plus and Liquid Strong front-end development (HTML, CSS, JavaScript) Proficient with Git workflows and version control Fluent in English and confident in client-facing communication Must be available and contactable during ADST (Sydney) business hours Bonus: Headless builds (Hydrogen/Next.js), custom app dev, AI coding tools Why Join Us: Remote with flexible hours Results-focused and collaborative culture Opportunity for growth within a global team Apply if you’re a technically skilled, self-driven developer ready to build impactful Shopify solutions and work closely with clients in the ADST time zone.
Budget:
not specified
7 hours ago
|
|||||
Show/Hide Filters
|
not specified | 7 hours ago |
Client Rank
- Risky
1 open job
11:54 PM
1
|
||
I have WP site using the Buddyboss theme/plugin. There is a member directory with 30 search filters. On mobile, there is a linear layout where the filters appear at top of page and the directory below them. When the user selects the filters and clicks Search, the page reloads putting the user back at the top of the page, and the directory still appears below the filters. This means the user must scroll back through the 30 filters to get to the results. Can you allow the user to Show/Hide all filters by tapping the "Filter Results" title? See screenshot attached.
Budget:
not specified
7 hours ago
|
|||||
Unity 3D & Game & Mobile & Web developer
|
20 - 50 USD
/ hr
|
6 hours ago |
Client Rank
- Excellent
$66 231 total spent
19 hires, 8 active
61 jobs posted
31% hire rate,
1 open job
47.59 /hr avg hourly rate paid
1 266 hours paid
4.89
of 16 reviews
Company size: 100
Registered: Mar 27, 2020
Bethesda
1:54 AM
5
|
||
Invincible GG is searching for an experienced (Senior or Mid-level with lead potential) Unity/Unreal programmer with experience in Java, C++, Objective C, and other programming languages and strong knowledge of publishing both PC and Mobile (Google Play, Apple Store, and direct) who will join our Unity application, development team.
You’ll enjoy working with an experienced and passionate team, challenging projects and personal growth. The right candidate will be a team player that will enjoy a casual and dynamic work environment. We’re a growing company and looking for passionate, innovative and talented people to join our team and help us to create the next generation of interactive products. Responsibilities: - Achieve the development goals of the project with innovative implementation. - Maintain design documents, and code comments. - Collaborate with the Unity/Unreal and design team on game features; - Implement game features and systems; - Self-critique work and ensure that quality and scheduling goals are met; - Work closely with artists, lead engine programmers, designers, and producers to implement game features Requirements: - 5+ years of experience in programming/engineering development - B.Sc. degree in Computer Science, Math, Engineering or equivalent experience - Previous programming experience on several published titles/applications - Great knowledge of C#, development and optimization skills with Unity - Good broad Unity knowledge, animation, scene management, particles, physics - Experience of Unity application interfacing with remote APIs beneficial - Shader experience a plus - Able to creatively solve implementation problems in Unity balancing performance with realism - Proven experience in developing and implementing key gameplay systems - Outstanding knowledge of performance/memory constraints of game software - Understanding of the challenges associated with cross-platform development - Excellent communication and interpersonal skills, great team player. - Experience with GIT version control beneficial Personal qualities: - High achiever and conscientious worker - Self-starter, able to push ahead under little or no supervision. - Great proactive communicator - Able to work effectively as part of a team
Hourly rate:
20 - 50 USD
6 hours ago
|
|||||
Enterprise Data Engineer for Oracle Fusion ERP Data Pipelines
|
20 - 40 USD
/ hr
|
5 hours ago |
Client Rank
- Excellent
$15 285 total spent
1 hires
3 jobs posted
33% hire rate,
1 open job
45.00 /hr avg hourly rate paid
323 hours paid
5.00
of 1 reviews
Registered: Apr 5, 2023
San Diego
9:54 PM
5
|
||
We are seeking an experienced Enterprise Data Engineer to design and build robust data pipelines that will extract vital data from our Oracle Fusion ERP systems. The ideal candidate will have a strong background in data engineering, particularly with ERP systems, SQL & Data Modeling Expert in SQL (PL/SQL optional), Ability to design normalized and denormalized schemas, Strong grasp of relational database design. Data Extraction & ETL: Experience with REST/SOAP APIs, BI Publisher reports, or Oracle Cloud Data Extracts, Familiarity with tools like Informatica, Fivetran, Talend, or Azure Data Factory, Programming/Scripting: Python, Java, or shell scripting for automation and data manipulation. Data warehousing & Lakehouse platforms.
Client's questions:
Hourly rate:
20 - 40 USD
5 hours ago
|
|||||
Programing Tutoring
|
not specified | 5 hours ago |
Client Rank
- Excellent
$14 755 total spent
75 hires, 22 active
167 jobs posted
45% hire rate,
2 open job
10.71 /hr avg hourly rate paid
967 hours paid
4.81
of 53 reviews
Industry: Food & Beverage
Company size: 2
Registered: Sep 5, 2012
Hoffman Estates
1:54 AM
5
|
||
I'm looking for an expert to assist in getting proficient in programing.
Budget:
not specified
5 hours ago
|
|||||
Update Android project to work on newest version of Android Studio
|
300 USD | 5 hours ago |
Client Rank
- Excellent
$9 445 total spent
36 hires, 2 active
44 jobs posted
82% hire rate,
1 open job
32.98 /hr avg hourly rate paid
221 hours paid
5.00
of 33 reviews
Industry: Sports & Recreation
Individual client
Registered: Apr 4, 2014
Ridgefield
1:54 AM
5
|
||
I am needing help taking an older Android Studio project for our Android app and updating it. The project itself is too old and will no longer build. There are various errors and packages that need fixing, and I don't have time to diagnose these.
I need someone that can fix the errors, update the project to build on the latest Android Studio and be ready to build to send a file to the Google Play store. I would also like a clear explanation of all that was done to make the updates to a working project file.
Fixed budget:
300 USD
5 hours ago
|
|||||
Fal.ai / kling api
|
10 USD | 5 hours ago |
Client Rank
- Excellent
$13 087 total spent
51 hires, 3 active
47 jobs posted
100% hire rate,
1 open job
4.37
of 44 reviews
Registered: Dec 18, 2015
Englewood
1:54 AM
5
|
||
In the first milestone, I would like you to look at fal.ai and check the API for:
Create several lines of Java method or Python function with API that allows FLUX.1 Kontext creating video scenes based on several paragraphs of text here is the name (createVideo) and parameter (text) of the method or function: /* @param text - up to 3 paragraphs with the description of video * @return String URL to created video */ String createVideo(String text); $10 Let me know if you understand and do not hesitate asking questions and providing samples Thank you!
Fixed budget:
10 USD
5 hours ago
|
|||||
Experienced Tech & Automations Engineer
|
26 - 45 USD
/ hr
|
4 hours ago |
Client Rank
- Excellent
$415 557 total spent
67 hires, 41 active
124 jobs posted
54% hire rate,
3 open job
25.79 /hr avg hourly rate paid
14 822 hours paid
4.78
of 35 reviews
Registered: Feb 20, 2022
Broadbeach
2:54 PM
5
|
||
# IT & Automation Engineering Architect
## The Mission At our core, we're not just about eCommerce – we're about transformation. We turn founders with ideas into founders with revenue. Every 7 days, someone within our communities hits their first $10,000 in sales because of our frameworks and services. We have the mission to be able to generated 1 new founder hitting their first 10,000 in sales every hour or in total generating $87 million in annual sales, and our influence extending to over $1 billion across all businesses we impact with our team. Now we need someone who can build the technical architecture behind our next phase of growth. ## The Role As our IT & Automation Engineering Architect, you'll be the technical mastermind who transforms how we operate at every level. We're not looking for someone to maintain systems – we're looking for someone to reimagine them. You'll create the invisible infrastructure that powers extraordinary client results, gives our team superpowers, and turns data into competitive advantage. ## What You'll Do * **Design the Nervous System of Our Business** – Connect and optimize our tech stack (Close.com, Active Campaign, Zapier, Webflow, Airtable, Slack, Google Workspace, Figma, Skool, Xero, Hyros) to eliminate friction and amplify results and increase efficiency * **Build the Brain Behind Our Operations** – Develop AI-powered systems that learn, adapt, and automate, freeing our team to focus on high-value work that machines can't do. Some of these AI systems will be: Sales team data analysis, product sourcing tools, marketing analysis and performance mechanisms. * **Architect Our Data Advantage** – Create a sophisticated data lake that transforms raw information into actionable intelligence, predictive insights, and competitive edge (this is to be done through our current system which is Airtable until we graduate to a more comprehensive system. * **Engineer Client Breakthroughs** – Develop tools and dashboards that give clients unprecedented visibility and control over their growth journey * **Enable Organizational Leverage** – Design systems that allow every team member (from leadership to marketing, sales to delivery) to maximize their impact through technical amplification ## What You Bring * **Technical Versatility** – Proficiency in Python, Java, C++, and JavaScript that enables you to select the right tool for each unique challenge * **Systems Thinking** – Experience integrating complex tech ecosystems, particularly around Shopify's platform and API * **Automation Expertise** – Proven ability to identify, design, and implement workflows that eliminate repetitive tasks and enhance productivity * **Data Fluency** – Deep understanding of how to structure, manage, and extract value from large datasets * **AI Implementation** – Experience deploying artificial intelligence to solve real business problems * **Business Acumen** – 6+ years experience applying technical solutions to drive measurable business outcomes * **Communication Clarity** – Ability to translate complex technical concepts into language that inspires action across all departments ## Where This Role Can Take You This position sits at the intersection of technology and business strategy. As you succeed, your path could lead to: * Building and leading our technical innovation department * Pioneering industry-first solutions that redefine eCommerce consulting * Joining our leadership team to shape company-wide strategy and growth ## Our Promise to You * **Real Impact** – Your work will directly help entrepreneurs build successful businesses * **Technical Freedom** – The autonomy to choose the right approaches and technologies that can impact the companies trajectory * **Remote Flexibility** – Work from anywhere while collaborating with a world-class team * **Growth Partnership** – We invest in your development as you help us grow *** Close and direct work with the CEO to bring innovations, projects and ideas to life ## How to Join Us If you're the kind of person who sees technology not just as tools but as transformative leverage, we want to talk. 1. Submit your portfolio highlighting systems you've built that drove business results (please provide specific examples and current/relevant case studies) 2. Include a note explaining the most innovative automation you've ever created (this will be reviewed by the CEO) 3. Prepare to demonstrate your problem-solving approach in our technical discussion & research eCom Capital to be able to provide insight into the reasons you think working in this organisation would be aligned. Our selection process focuses on how you think, not just what you know. We care about your ability to envision solutions to problems we haven't even recognized yet. --- *We're building something extraordinary. If you're the right person for this role, you already know it. Apply now and let's create the future of eCommerce entrepreneurship together.*
Hourly rate:
26 - 45 USD
4 hours ago
|
|||||
Miva Developer
|
14 - 60 USD
/ hr
|
7 hours ago |
Client Rank
- Excellent
$61 333 total spent
18 hires, 7 active
63 jobs posted
29% hire rate,
9 open job
36.78 /hr avg hourly rate paid
1 515 hours paid
5.00
of 11 reviews
Registered: Jun 10, 2021
Asheville
1:54 AM
5
|
||
Job Overview:
We are seeking a skilled Miva Developer to join our innovative team. The ideal candidate will have a strong background in software development and a keen interest in emerging technologies, particularly in the field of E-com. This role involves collaborating with cross-functional teams to design, develop, and implement cutting-edge software solutions that meet the needs of our clients and enhance our product offerings. Duties: - Design, develop, and maintain high-quality software applications. - Collaborate with product managers and other stakeholders to gather requirements and translate them into technical specifications. - Write clean, scalable code using appropriate programming languages and frameworks. - Conduct code reviews and provide constructive feedback to team members. - Troubleshoot, debug, and optimize existing applications for performance and reliability. - Stay updated on industry trends and emerging technologies to incorporate innovative solutions into projects. - Participate in Agile development processes, including sprint planning, daily stand-ups, and retrospectives. Experience: - Proven experience as a Developer or similar role in software development. - Strong proficiency in programming languages such as Java, Python, or C++. - Familiarity with E-com concepts is highly desirable. - Experience with version control systems (e.g., Git) and collaborative development tools. - Knowledge of software development methodologies such as Agile or Scrum. - Excellent problem-solving skills and attention to detail. - Strong communication skills with the ability to work effectively in a team environment.
Hourly rate:
14 - 60 USD
7 hours ago
|
|||||
Development of UI for Backend in Go
|
25 - 40 USD
/ hr
|
4 hours ago |
Client Rank
- Excellent
$2 460 total spent
22 hires, 1 active
61 jobs posted
36% hire rate,
2 open job
4.78
of 19 reviews
Industry: Tech & IT
Company size: 10
Registered: Oct 20, 2020
DUBAI
8:54 AM
5
|
||
The following high-level functional requirements are the minimum scope defined to meet its business and customer use cases:
1-UNIFIED WEB INTERFACE (UI) • Single responsive UI for all modules (multi-tenant dashboards, devices, rule engine, reports, etc.) • Mobile-friendly experience for customer access (enabling use via WebView in future mobile apps) • Dashboard Management: o Admin users can create, manage, and assign dashboards per user or group o Widget types supported: charts, tables, maps, gauges, control panels o Widget data sources: device telemetry, user inputs, alarms, etc. 2-RULE ENGINE • Visual rule engine (as example, Node-RED style) • Input sources: device payload, database, events (Future Road maps if not supported) • Output actions: device RPC, email/SMS alerts, data storage • Built-in data enrichment functions (e.g., calculate tank volume from level readings and attributes) • Default and configurable rule sets per device type • JavaScript / Lua (or similar) scripting nodes for advanced customization 3-PROTOCOL DECODER & CONNECTOR • Frontend interface or rule engine scripting support to decode custom TCP/UDP protocols (e.g., NB-IoT, 4G GPS devices). Option to provide the TCP or UDP port numbers should also be there in the frontend for the use of the same (This feature cannot be considered as custom development since this is the fundamental and major use case of Truesync) • Basic support for HTTPS, MQTT, CoAP, WebSocket, OPC-UA. • Connector for Chirpstack ( v4) for integrating LoRaWAN Devices. • Any additional Protocols such as DLMS/COSEM, Modbus, M-Bus shall be developed Custom as requested by Truesync. 4-SCHEDULER ENGINE • Time-based automation support (cron-like jobs) • Execute rule chains or workflows on schedule • Useful for periodic alerts, data syncs, or report generation 5-REPORTING MODULE • Custom report designer accessible via UI • Scheduled reports with email distribution support via rule engine • Email notification templates manageable through UI 6-ASSET & DEVICE HIERARCHY • Ability to create "Assets" and assign devices to them (e.g., Room = Asset, AC + Sensor = Devices) • Visual mapping of asset-device relationships 7-PROTOCOL FLEXIBILITY & EXTENSIBILITY • Support for custom protocol integration not covered by standard decoders • REST APIs for external integration with business applications 8-MULTI-TENANCY & ROLE BASED ACCESS CONTROLS • Support for multi-tenancy to segregate users, devices, and dashboards • Admin hierarchy and user roles per tenant 9-GEO-REDUNDANCY DEPLOYMENTS • It shall support geo-redundancy deployments customer business continuity, failover, and resiliency to meet overall availability of the platform. 10-LICENSING MODULE  Device-based Licensing: Allow customers to purchase licenses for a specific number of devices Implement a mechanism to track and enforce the device limits for each license.  Time-based Licensing: Offer subscription-based licenses that are valid for a specified duration (e.g., monthly, annually).  Multi-Tenant Support: Implement a multi-tenant licensing model to accommodate different customers on the same platform. Ensure that each tenant's license is independent of others.  On-Premises and SaaS Compatibility: Provide options for both on-premises and Private SaaS installations. For on-premises, implement a method to generate and validate license keys tied to a specific hardware or installation. For Private SaaS, manage licenses centrally. Private SaaS meaning, if a customer advises Truesync to host the platform on own Cloud and provide them as a SaaS model where they will not be responsible for any Cloud Infrastructure, Platforms) and also, allows instance sharing to other private customers of Truesync. No Public SaaS is offered under this scope where any customers can create a domain/ account and subscribe to get an instance of IoT platform publically.  Usage Analytics and Reporting: Integrate usage tracking to monitor the number of connected devices and license utilization. Provide reporting features for customers to view their usage patterns and ensure compliance.  Trial Periods and Evaluation Licenses: Support trial periods to allow potential customers to evaluate the platform. Implement evaluation licenses with limited features or device connections during the trial period.  Customer Notifications: Implement automated notifications for license expirations, renewals, and other important events. 11-SECURITY AND ANTI-PIRACY MEASURES: Implement robust security measures to prevent license tampering or unauthorized use. Consider incorporating encryption and other anti-piracy mechanisms to protect licensing system. Skills a) Strong understanding of IoT protocols such as MQTT, CoAP, and client-server architectures. b) Proficiency in Go programming language, or experience with other relevant languages (e.g., Python, Rust, Java, C++, Node.js) with a willingness to gain in-depth expertise in Go. c) Experience with both SQL and NoSQL databases, including usage, programming, administration, and deployment. d) Competence in API design and development. e) Familiarity with testing frameworks, Continuous Integration (CI), and DevOps practices. f) Proficiency in Docker containerization and Kubernetes orchestration. g) Experience in Linux system administration and basic network configuration.
Hourly rate:
25 - 40 USD
4 hours ago
|
|||||
OCR & Intelligent Invoice Processing Specialist
|
5,000 USD | 3 hours ago |
Client Rank
- Good
$4 550 total spent
5 hires, 1 active
19 jobs posted
26% hire rate,
1 open job
5.00
of 3 reviews
Company size: 10
Registered: Jan 16, 2018
Atlanta
1:54 AM
4
|
||
About MostEdge
At MostEdge, we exist to accelerate commerce and build sustainable, trusted experiences. Our mission is clear: Deliver trusted, profitable experiences by empowering retailers and partners to accelerate commerce sustainably. From real-time product data updates to intelligent vendor invoice processing, we fuel data integrity at scale across the retail value chain. Every system we build is mission- and business-critical, operating at 99.99999% uptime, processing over 250 purchase invoices per hour, and syncing with a high-velocity sales and inventory backend. Role Overview We’re seeking a hands-on AI ML Expert with deep experience in OCR (Optical Character Recognition) and intelligent document processing to lead the automation of our vendor invoice ingestion, validation, and publishing workflows. You’ll design and deploy pipelines that extract, clean, and enrich invoice data (PDFs, Excel, scans), integrate structured outputs with MySQL and MongoDB, and serve insights via APIs and dashboards. This project shall enable faster reconciliations, accurate cost tracking, and enhanced vendor intelligence. Scope & Accountability What You Will Own • Build and optimize OCR pipelines to extract structured data from unstructured PDFs, scans, and spreadsheets. • Train or fine-tune custom AI ML models (such as Tesseract, LayoutLM, Donut, or similar) to recognize fields like UPC, quantity, price, taxes, totals, and vendor codes. • Detect, flag, and correct inconsistencies or anomalies in cost, quantity, and item mapping. • Integrate outputs with MySQL (product or vendor DB) and MongoDB (sales or invoice logs). • Publish results to APIs, dashboards, and downstream microservices for reconciliation, reporting, and audit trails. • Collaborate with DevOps and Data teams to automate end-to-end workflows (batch and real-time). What Success Looks Like • 95% field extraction accuracy across 300 vendor invoice formats. • 99% automated parsing and publishing of all invoices within 5 minutes. • Less than 1% manual corrections required after system deployment. • Seamless sync with product master and vendor cost histories. Skills & Experience Must-Have • 5+ years in AI/ML, NLP, or document intelligence, with production-level OCR experience. • Strong hands-on with AWS, Tesseract, EasyOCR, LayoutLM, Donut, PaddleOCR, or similar. • Deep expertise in PDF, image preprocessing, bounding box detection, and layout parsing. • Familiarity with LangChain, FastAPI, and embedding-based RAG architectures. • Strong Python skills and experience with data validation, cleansing, and reconciliation workflows. • Experience integrating models with SQL (MySQL/MariaDB) and NoSQL (MongoDB) stores. • Startup or fast-paced environment experience, working with agile teams and JIRA-based sprints. Nice-to-Have • Exposure to vector databases for semantic search on invoices or product catalogs. • Knowledge of ETL design, workflow schedulers, or event-driven systems (e.g., Kafka). • Prior work in retail, procurement, or financial document AI. How You Reflect Our Values • Lead with Purpose: You simplify and scale document intelligence for smarter operations. • Build Trust: Your models extract information accurately, transparently, and reliably. • Own the Outcome: You own the automation from OCR to structured insights. • Win Together: You collaborate across engineering, ops, and vendor support. • Keep It Simple: You reduce manual work and build clean, maintainable pipelines.
Fixed budget:
5,000 USD
3 hours ago
|
|||||
Senior LLM Engineer and Software Developer
|
15 - 30 USD
/ hr
|
2 hours ago |
Client Rank
- Medium
$325 total spent
5 hires, 2 active
14 jobs posted
36% hire rate,
6 open job
4.86
of 3 reviews
Registered: Nov 11, 2024
Cambridge
12:54 AM
3
|
||
Marketplace web application governed by a tailored LLM.
Hourly rate:
15 - 30 USD
2 hours ago
|
|||||
Healthcare Software/Fullstack Engineer
|
not specified | 5 hours ago |
Client Rank
- Medium
3 jobs posted
1 open job
Registered: Jun 15, 2025
11:54 PM
3
|
||
We’re looking for a full stack developer (with AI experience) to help us implement core automation features including document parsing, real-time monitoring, payer enrollment tools, and fraud detection. Think identity verification, form pre-filling, NLP-based reporting, and scalable alert systems.
The project involves healthcare data workflows, secure integrations, and AI logic that can think ahead of human bottlenecks. You don’t need to know everything — but you do need to be curious, reliable, and excited about working on infrastructure that matters. ⸻ Skills Required: • Next.js / Python • React / TypeScript • OAuth, SSO, API integrations • AI/ML tools (LLMs, OpenAI, Langchain, etc.) • Database experience (Postgres or MongoDB) • Bonus: Healthcare APIs, OCR, or dashboarding experience ⸻ Details: • Project-based (20+ hrs/week) • Remote, flexible • 3-month initial scope with extension possible • Must overlap at least 3 hrs with CST
Budget:
not specified
5 hours ago
|
|||||
Full-Stack Developer Needed for Vending Machine Software and Admin Portal
|
15 - 35 USD
/ hr
|
2 hours ago |
Client Rank
- Good
$5 229 total spent
13 hires, 6 active
6 jobs posted
100% hire rate,
1 open job
8.42 /hr avg hourly rate paid
27 hours paid
5.00
of 7 reviews
Individual client
Registered: Feb 2, 2022
Franklin
1:54 AM
4
|
||
We are hiring a full-stack developer on a project-based contract to build software for a vending machine and a connected admin portal. The machine-side application will run on an Android tablet and communicate with the machine’s control board using TCP or serial protocols via a provided SDK.
The backend portal will allow administrators to view machine status, manage inventory, remotely trigger commands, and track transaction logs. It should include secure user authentication and basic reporting functionality. Required technologies: • Python or Node.js for machine-side communication • React or Vue for the admin frontend • FastAPI, Django, or Express for the backend • PostgreSQL, MongoDB, or Firebase for database management • Experience with serial or TCP communication protocols • Android development (Java/Kotlin) or cross-platform tools like Flutter or React Native Experience with hardware integrations or similar control systems is a strong plus. This is a contract role for the initial build, with the potential for ongoing work maintaining and improving the platform. Please include relevant project examples, your preferred stack, availability, and rate. Client's questions:
Hourly rate:
15 - 35 USD
2 hours ago
|
|||||
Development of Fully Automated AI Answering System
|
not specified | 2 hours ago |
Client Rank
- Risky
1 open job
11:54 PM
1
|
||
We are seeking a skilled developer to create a Fully Automated AI Answering System. This system should integrate with our website and Facebook, allowing incoming queries to be monitored and routed to AI for instant responses. The ideal candidate will have experience in custom API development and AI integration. Your expertise will help us enhance customer interaction and streamline communication. Strong problem-solving abilities and familiarity with AI frameworks are essential to deliver a seamless user experience.
Budget:
not specified
2 hours ago
|
|||||
System Administrator – SSL Certificate Integration for Elasticsearch
|
10 - 50 USD
/ hr
|
2 hours ago |
Client Rank
- Risky
1 open job
Registered: Jun 16, 2025
12:54 PM
1
|
||
We are looking for a freelance DevOps Engineer or System Administrator to help us resolve a specific SSL configuration issue with Elasticsearch on a Linux server hosted by Liquid Web.
Our Let's Encrypt SSL certificate is correctly installed and trusted by the server and browsers for our domain. However, Elasticsearch is not able to use the existing certificate because it requires a custom .p12 (PKCS#12) certificate file for secure HTTPS communication — and the one currently used lacks intermediate certificates. Client's questions:
Hourly rate:
10 - 50 USD
2 hours ago
|
|||||
Clone Google Slides with Collaboration Features
|
500 USD | 2 hours ago |
Client Rank
- Medium
$805 total spent
2 hires
2 jobs posted
100% hire rate,
1 open job
18.75 /hr avg hourly rate paid
15 hours paid
5.00
of 2 reviews
Industry: Education
Individual client
Registered: Mar 24, 2025
Sheridan
12:54 AM
3
|
||
We are looking for a skilled developer to create a site similar to Google Slides. The project will focus on implementing core functionalities, including the ability to upload slides, collaborate in real-time, and share presentations seamlessly. We also want to include the option of integrating aI features at a later date.
For now we're only seeking to create a basic MVP - please advise on areas where it makes sense to mock up a demonstration, rather than create the site. Objectives of the site include: Replicate the core features of Google Slides (slide editing, collaboration, sharing, exporting). Integrate an AI assistant to: Interpret user queries about the content. Suggest or directly apply updates to slides. Provide real-time contextual assistance for teaching and briefing material. Provide a secure, private, and scalable platform suitable for sensitive or classified environments. Enable modular extensibility for additional training-specific plugins (e.g., simulation injects, live polling, readiness assessments). Experience in web development and familiarity with collaborative tools are essential. If you have a passion for creating user-friendly interfaces and can deliver a reliable product, we want to hear from you!
Fixed budget:
500 USD
2 hours ago
|
|||||
Back End and AI/RAG Developer Needed
|
15 - 25 USD
/ hr
|
2 hours ago |
Client Rank
- Risky
1 jobs posted
3 open job
Registered: Jun 16, 2025
11:54 PM
1
|
||
We are seeking a skilled Back End Developer with expertise in AI and RAG (Retrieval-Augmented Generation) technologies. The ideal candidate will work on developing robust back-end systems while integrating cutting-edge AI solutions. Your role will involve database management, API development, and implementing AI functionalities. Strong problem-solving skills and the ability to work collaboratively with our team are essential. If you have a passion for innovative technology and a track record of successful projects, we want to hear from you!
Hourly rate:
15 - 25 USD
2 hours ago
|
|||||
IT Security
|
600 USD | 1 hour ago |
Client Rank
- Risky
1 open job
11:54 AM
1
|
||
Requirements:
3+ Years of Experience in IT Security CEH V 12/ OSCP / ePWTX (at least one) Strong Understanding of layered defense Familiar with secure coding and testing frameworks Key Responsibilities: Analyze security policies (network & web app security) Test apps ( java, flutter, vue j.s, React Native, PHP, etc) Follow standards (OWASP, MITRE ATT&CK, PTES, NIST)
Fixed budget:
600 USD
1 hour ago
|
|||||
Develop Android App
|
20 - 40 USD
/ hr
|
1 hour ago |
Client Rank
- Excellent
$19 620 total spent
33 hires, 3 active
80 jobs posted
41% hire rate,
1 open job
19.79 /hr avg hourly rate paid
609 hours paid
4.83
of 6 reviews
Registered: Dec 26, 2013
Irvine
1:54 AM
5
|
||
- Develop Android app with TTS logo (Should be able to download from Google playstore)
- Come up with a professional looking interface to consume a push-notification/message with custom data (name value pair)from Google Firebase platform and display data - Acknowledge Push notification & update - Postman collection with: a) API call send push notifcation to Google Firebase b) API call with retrive status of Push notification - Knowledge transfer
Hourly rate:
20 - 40 USD
1 hour ago
|
|||||
Android app task on play store need developer
|
90 USD | 1 hour ago |
Client Rank
- Medium
7 jobs posted
1 open job
Registered: Jun 3, 2025
10:24 AM
3
|
||
Hello
i need android app developer my app task i have 3 apps all apps are developed and tested, all files are ready, i want long term cooperation for more details you can apply this job am waiting you for discussion Thanks
Fixed budget:
90 USD
1 hour ago
|
Streamline your Upwork workflow and boost your earnings with our smart job search and filtering tools. Find better clients and land more contracts.