Head of Engineering

We're looking for experienced software engineers to build AI coding tasks from a codebase they know well. US$1,000 per task, and you can do as many tasks as you want. You turn a real change from a repository you know into a task that today's best AI coding models struggle with: hard for the models, but fair for a skilled engineer. Your tasks are used to measure and train AI coding models. Remote, any location. US$1,000 per task that passes review. Minimum of one task a week, about 10 hours a week. How it works Apply. Complete a short screener interview and upload your resume. Propose. Once you're selected, pick a change from a repository you know and submit a short proposal. We approve it or suggest a better candidate. Build. In our platform, set up the repository as it was before the change, then write the brief, the correct solution and the grading checks. Stress-test. Try lazy, incorrect and shortcut solutions and make sure your checks catch them. Model testing. Run your task against leading AI models until strong models often fail but a skilled engineer can clearly solve it. Review. A reviewer checks your task and you revise it. Most tasks take more than one round. Next task. Once your task is accepted, start another. Requirements 2+ years of professional software engineering Code merged into a public open-source repository, ideally one you know well. A private codebase you own may also qualify (not employer or client code) Strong in at least one of Python, TypeScript, Go, Rust, Java or C++ Solid with Docker, Linux, Git and automated testing Regular use of an AI coding tool Experience writing tests, rubrics or evaluation criteria, ideally for AI models You can explain a change clearly and concisely, in your own words At least 10 hours a week, starting now A secure personal or work computer (no public or shared machines) Nice to have Deep expertise in one area, such as databases, compilers, distributed systems, security or infrastructure Experience building agen…

$1000 per task

Posted 17 Oct 2026

Who Should Apply We are looking for developers from all technical backgrounds and language specializations. If you write clean code and understand software design, you are a fit: Software Engineers & Computer Scientists specializing in algorithms, data structures, or system design. Full-Stack & Web Developers working with modern front-end or back-end frameworks (JavaScript, TypeScript, React, Node.js, Python, PHP, Ruby, etc.). Backend & Systems Developers experienced in languages such as C++, Java, Go, Rust, or Python. DevOps & Database Engineers familiar with API design, SQL/NoSQL databases, or scripting. Role & Responsibilities As an AI Code Trainer , you will evaluate model-generated code, author reference solutions, and stress-test AI reasoning across various engineering domains. Code Auditing & Quality Analysis: Critique AI-generated solutions for logic, performance, security vulnerabilities, syntax, and coding best practices. Gold-Standard Solutions: Write clean, production-grade reference code and clear technical explanations for complex programming prompts. Test Design: Build unit tests and edge-case scenarios to evaluate model accuracy and expose edge-case failures. Technical Feedback: Write structured explanations detailing why an AI solution succeeds, fails, or produces bugs. Requirements Software Engineering Proficiency: Strong core fundamentals in at least one major programming language or web stack (e.g., Python, JavaScript/TypeScript, Java, C++, Go, C#, Rust, PHP). Debugging & Code Review: Ability to quickly analyze third-party code, catch subtle logical errors, and evaluate efficiency. Technical Communication: Clear written English to explain technical concepts and code review rationales effectively. Eligible Locations: Resident of USA, UK, Canada, Australia, New Zealand, India, Pakistan, or Philippines . Why Join Us? $50–$125/hr commensurate with your technical domain expertise and task complexity. Weekly Guaranteed Payouts directly to your choice …

$45-$120/Hour

Posted 5 Oct 2026

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe. What we offer: The rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers. No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best. We'll manually find the best project for you according to your skills and preferences. Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours. We respect your seniority so you can expect no micromanagement or screen trackers. Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah? We will support you from the time you submit the application throughout all cooperation stages. Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do. Requirements for the Senior React & Python Position: 4+ years of software development experience. Commercial experience: React.js 3+ years & Python 3+ years OR React.js 2+ years & Python 5+ years OR React.js 5+ years & Python 2+ years Experience with AWS, GCP, or Azure is required. Other requirements: Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture. Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls. Strong self-organizational skills — ability to work full-time remotely with no supervision. Reliability — we want to trust you and expect that you won’t let us and the client down. Adaptability and Flexibility — the ability to …

Posted 2 Oct 2026