Backend Developer – AI Trainer (Remote, Part‑time)

About the role

We are looking for skilled Backend Developers to join our AI training team as remote, part‑time consultants. You will design realistic software‑engineering tasks, create reference implementations, and evaluate peer submissions to ensure high‑quality, production‑ready code.

Key responsibilities

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

Required profile

• Advanced professional written proficiency in English.
• 3–7 years of professional software‑engineering experience.
• Ability to work independently, manage own schedule, and provide own tools.
• Willingness to collaborate with multiple vendors while respecting their policies.

Required skills

• Strong proficiency in Python and JavaScript/TypeScript.
• Working knowledge of Java, C#, or Go.
• Experience with testing frameworks such as pytest, Jest, JUnit, xUnit, or Go testing.
• Proven ability to debug large, multi‑file codebases and perform code reviews, refactoring, and production migrations.

What we offer

• Project‑based consultancy with per‑project compensation.
• Flexible, remote work schedule.
• Opportunity to shape realistic AI‑training scenarios for developers worldwide.