• $50–$100 per hour equivalent, paid per accepted task

• 100% remote

• Part-time

• Under 20 hours a week, you choose when

Use your full-stack engineering skills to create and evaluate realistic software tasks for AI systems on a flexible part-time schedule.

The AI systems changing how software gets built are trained and tested by real engineers. The teams building them need full-stack engineers who can create realistic software tasks, judge whether the AI's code is correct and complete, write the solution a professional engineer would deliver, and explain where the implementation falls short. Your work helps evaluate software-engineering tasks and AI-generated code across front-end and back-end systems. This is part-time contract work done remotely on a flexible schedule.

What you'll do

• Create and solve realistic full-stack tasks involving user-facing features and APIs

• Trace requests and data across browsers and back-end services to judge whether an AI implementation works correctly

• Write professional reference solutions and validate code across front-end and back-end systems

• Review AI-generated code for security, performance and maintainability, and explain where it needs improvement

Why this is worth your time

• Build practical AI skills while earning the equivalent of $50–$100 an hour for engineering judgment

• Evaluate AI-generated code across full-stack systems and give clear feedback on correctness, security, performance and maintainability

• Build practical experience applying full-stack debugging and architecture judgment to AI code review and clear model feedback

• Part-time, flexible schedule; fully remote, United States

Who this is for

• Strong professional experience building production full-stack applications across multiple programming languages

• Strong full-stack systems knowledge covering browser applications, APIs, application state, databases, service integration, architecture and debugging

• Fluent in English; experience contributing to complete software-system architecture, working in unfamiliar codebases, and solving difficult debugging problems

• No experience in AI training work needed. You bring your full-stack engineering experience; the work focuses on creating, solving and evaluating software-engineering tasks.

Pay and details

• $50–$100 per hour equivalent; pay is per accepted task, as an independent contractor

• Part-time, under 20 hours a week, you choose when; fully remote, United States

How to apply

1. Apply on OpenTrain (upload your resume): https://app.opentrain.ai/api/out/cmu3vn4y500000bgm9fcp5md7?ch=reactjobs&sub=reactjobs-ope-45416-2026-10

2. Complete a short application on the hiring platform.

3. If shortlisted, take a conversational AI interview with technical questions and a coding challenge, whenever it suits you.

Ready to put your full-stack engineering skills to work on AI training? 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.