Backend Developer - AI Trainer

About the role

We are looking for experienced Backend Developers to act as AI Trainers, designing and evaluating realistic software engineering tasks for an AI‑driven platform. This part‑time, remote consultancy allows you to work on a per‑project basis, creating coding challenges, reference implementations, and comprehensive test suites.

Key responsibilities

• Design multi‑file coding tasks covering bug fixing, feature development, refactoring, and testing.
• Write clear natural‑language specifications and reference implementations.
• Develop and extend unit and integration test suites for each task.
• Review peer‑generated tasks for correctness, clarity, and realism.
• Identify edge cases, ambiguities, and potential failure modes.

Required profile

• Advanced professional written proficiency in English.
• 3–7 years of professional software engineering experience.
• Experience with production‑grade backend or full‑stack development.
• Proven ability to debug large, multi‑file codebases and perform code reviews.

Required skills

• Python
• JavaScript / TypeScript
• Java
• C#
• Go
• Testing frameworks: pytest, Jest, JUnit, xUnit, Go testing

What we offer

• Remote, flexible schedule.
• Per‑project compensation (hourly rates estimated based on task complexity).
• Freedom to work with other clients, provided no conflict of interest.