Job Brief:

Help train the next generation of AI coding models. This remote contract role needs experienced software engineers to build realistic, challenging coding tasks from repositories they know well: tracking down subtle bugs, building non-trivial features, refactoring and optimising performance. If you can ship and debug real code, your skill is exactly what these projects need. No prior AI experience is required.

Pay: listed at $50–$100 an hour, paid per approved task.

Why engineers take this on:

• Your engineering experience is the qualification, in any one of Python, Java, Rust, Go, C++ or TypeScript.
• Remote, around 15 hours a week, so it fits alongside a job or other contracts.
• Hard, interesting problems: you design the tasks that frontier models get tested on.

What you'd actually do:

• Turn real problems from codebases you know into challenging, well-defined coding tasks.
• Build a reproducible environment and a reference solution for each task.
• Write checks that accept any correct solution and reject incomplete or hard-coded ones.

Who this suits:

• Engineers with significant hands-on experience in at least one of Python, Java, Rust, Go, C++ or TypeScript.
• People with a solid grasp of algorithms, data structures and debugging complex systems.
• Anyone who has refactored large codebases or shipped features end to end.

The honest bit:

• Pay, hours and requirements are set by the hiring company and shown on its role page.
• The role is fully remote with no country named, so applicants outside the US are welcome to apply.
• The process includes screening questions and a short recorded AI interview, and may include a technical assessment.
• Being offered a project is the hiring company's decision.
• Rekrootly is an independent referrer, not the hiring company, and may receive a fee if you're engaged.

How to apply:

Send your résumé below. We'll read your background and email you a direct link to this role, plus any others that fit.