Backend Developer – AI Trainer (Remote)

About the role

Anyone AI is looking for experienced Backend Developers to design and evaluate realistic software engineering tasks for a leading AI Lab. The role is remote, part‑time and project‑based, allowing you to work on bug fixing, feature implementation, refactoring and test generation while shaping the evaluation process.

Key responsibilities

• Design multi‑file coding tasks covering bug resolution, new features, refactoring and migration.
• 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.
• Ability to debug large, multi‑file codebases and perform code reviews.

Required skills

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

What we offer

• Project‑based consultancy with per‑project compensation.
• Fully remote work and flexible scheduling.
• Opportunity to contribute to cutting‑edge AI research and evaluation.