Software Engineer - Backend

Software Engineer – Backend (AI Training) About the Role What if your backend engineering expertise could directly shape how AI writes, reviews, and understands code for millions of developers around the world? We're looking for experienced Backend Software Engineers to evaluate AI-generated code, craft high-quality solutions, and help ensure the next generation of AI systems meets the bar that real engineers demand. This is a fully remote, asynchronous contract role. Work on your own schedule, take on as much or as little as fits your life, and make a direct impact on frontier AI — no commute, no meetings, no micromanagement. Type : Hourly Contract Location : Remote Commitment : Minimum 15 hrs/week, flexible scheduling What You'll Do Review and evaluate AI-generated backend code across languages like Python, Node.js, Java, and Go — assessing correctness, efficiency, scalability, and clarity Write high-quality backend solutions to server-side and API development problems spanning a range of difficulty levels Craft clear, developer-friendly explanations of architectural decisions, code logic, and problem-solving approaches Identify edge cases, ambiguities, and failure modes in AI-generated code and problem statements Apply best practices in RESTful API design, database usage, asynchronous programming, and system architecture Who You Are Strong backend engineering background with hands-on experience in server-side languages and frameworks — Python, Node.js, Java, Go, or similar Solid understanding of RESTful APIs, databases (SQL and/or NoSQL), and asynchronous programming patterns Comfortable with architectural trade-offs and able to articulate decisions clearly in writing Sharp eye for bugs, edge cases, and code quality issues — you hold AI-generated code to the same standard you'd hold your own Strong written English communication skills — you can explain complex technical concepts clearly and concisely Nice to Have 3–5+ years working with backend frameworks or doma