Full-Stack Developer - AI Trainer (Netherlands)

Stack

Responsibilities

• ▹Design and implement multi-file coding tasks across 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

Requirements

• ▹Advanced professional written proficiency in English
• ▹3–7 years of professional software engineering experience
• ▹Strong proficiency in Python and JavaScript/TypeScript
• ▹Backend or full-stack development experience in production systems
• ▹Experience with testing frameworks (e.g., pytest, Jest, JUnit, xUnit, Go testing)
• ▹Proven ability to debug and navigate large, multi-file codebases
• ▹Experience with code reviews, refactoring, and production migrations

Nice to have

• ▹Working knowledge of Java, C#, or Go

What we offer

• ▹Remote work
• ▹Flexible, self-managed schedule
• ▹Ability to work concurrently with other clients/employers (subject to their policies)

About the company

Anyone AI recruits skilled developers to work on a project with a leading AI lab, designing and evaluating realistic, production-grade software engineering tasks.