Backend Developer - AI Trainer (Germany)

📋 Description

• Design and implement multi-file tasks across bug fixing, features, refactoring, and testing
• Write clear natural-language specifications and reference implementations
• Develop and extend unit and integration tests
• 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; working knowledge of Java, C#, or Go
• Backend or full-stack development experience in production systems
• Experience with testing frameworks (pytest, Jest, JUnit, xUnit, Go testing)
• Proven ability to debug and navigate large, multi-file codebases; experience with code reviews, refactoring, and migrations

🎁 Benefits

• Part-time, project-based expert evaluation work
• Remote work
• Consultants control schedule and tools
• Paid per project; hourly estimates provided
• Collaborate with a leading AI lab