Backend Developer - AI Trainer (France)

Overview

Part-time backend developer and AI trainer working as a project consultant. You design and evaluate realistic backend software engineering tasks, including implementations, bug fixes, refactoring/migrations, and test generation.

What you'll do

• Design and implement 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.
• Review peer-generated tasks for correctness, clarity, and realism.
• Identify edge cases, ambiguities, and potential failure modes.
• Ensure alignment between specifications, code, and expected outputs.

What you'll need

• Advanced professional written proficiency in English.
• 3–7 years of professional software engineering experience.
• Strong proficiency in Python and JavaScript/TypeScript.
• Working knowledge of Java, C#, or Go.
• Backend or full-stack development experience in production systems.
• Experience with testing frameworks such as pytest, Jest, JUnit, xUnit, or Go testing.
• Proven ability to debug and navigate large, multi-file codebases.

Details

• Employment: part-time, project-based expert evaluation work.
• Work type: remote contributors.
• Location: France.