$50–$100 per hour equivalent, paid per accepted task 100% remote Part-time Under 20 hours a week, you choose when Work on the cutting edge of AI coding tools, on your own schedule, and get paid for the backend engineering skills you already have. The AI systems changing how software gets built are trained and tested by real engineers. The teams building them need software engineers who can create realistic coding problems, judge how well the AI solves them, write the solution a professional would produce, and explain exactly where the AI falls short. Your judgment becomes part of how the next generation of AI coding tools works. This is that work, done remotely around your current job. What you'll do Create realistic coding tasks for feature work and bug fixes Set up reproducible test environments and automated checks to verify submissions against expected behavior Produce the reference implementation for every coding task Review technical submissions, calling out defects and performance bottlenecks Why this is worth your time Earn the equivalent of $50–$100 an hour while building real AI skills alongside your current job Work directly with frontier AI coding tools and see how they are built, tested and improved, experience most software engineers will not have for years Build a career edge for what comes next: AI is reshaping software engineering, and the engineers who understand it from the inside will lead that change Fully remote, fully flexible, no minimum shift, no commute Who this is for Professional fluency in English Hands-on expertise in backend development using Python, Java, Rust, Go, C++, TypeScript, Node.js or a similar backend language Experience with scalable service and API development, software debugging, and automated test writing No AI experience needed. You bring the expertise; we bring the training on the tools. Pay and details $50–$100 per hour equivalent; pay is per accepted task, as an independent contractor Under 20 hours a week, you choose when; fully remote, United States How to apply Apply on OpenTrain (about two minutes; upload your resume). Complete a short application on the hiring platform. If shortlisted, take a conversational AI interview with technical questions and a coding challenge, whenever it suits you. Most people hear back within days. Ready to put your backend engineering skills to work at the frontier of AI? Apply today. About OpenTrain AI OpenTrain AI connects experienced professionals with paid, part-time AI training work: shaping and improving the AI systems that companies are building right now.