About the Role
What if your deep software engineering expertise could directly shape how the next generation of AI writes code? We're looking for senior-level developers in the Berlin area to evaluate, compare, and rank AI-generated code — helping AI systems learn what separates good code from great code.
What You'll Do
- Compare pairs of AI-generated code solutions and rank them based on quality, correctness, and engineering best practices
- Evaluate code for functional accuracy — verifying that solutions produce correct outputs across standard and edge cases
- Assess code quality factors including readability, efficiency, maintainability, and adherence to idiomatic patterns
- Identify bugs, logic errors, security issues, and performance bottlenecks in AI-generated code
- Write clear, structured justifications explaining your ranking decisions
- Work across multiple programming languages and problem domains — from algorithms and data structures to systems design and API integrations
- Complete task-based assignments independently on your own schedule
Who You Are
- Senior-level software engineer with 5+ years of professional development experience
- Proficient in at least two of the following: Python, JavaScript/TypeScript, Java, C++, Go, or Rust
- Strong understanding of algorithms, data structures, and computational complexity
- Experienced in code review — you can quickly spot issues and articulate what makes one solution better than another
- Deep knowledge of software engineering best practices: clean code, design patterns, testing, and performance optimization
- Clear written communicator who can explain technical reasoning concisely
- Self-motivated and consistent when working independently without supervision
Why Join Us
- Work on cutting-edge AI projects alongside leading research labs
- Fully remote and flexible — work when and where it suits you
- Freelance autonomy with the structure of meaningful, task-based work
- Your engineering expertise directly shapes how AI understands and generates code at scale
- Intellectually stimulating work that keeps your skills sharp across languages and domains
- Potential for ongoing work and contract extension as new projects launch