Model Performance Software Engineer, Claude Code

Highlights

• Architect evaluation systems measuring Claude's coding capabilities at scale.
• Build research infrastructure that accelerates how quickly research can move.
• Set technical direction at the intersection of engineering and AI research.

What they offer

• Competitive compensation and benefits
• Optional equity donation matching
• Generous vacation and parental leave
• Flexible working hours

Ideal candidate

A seasoned technical leader who thrives in fast, high-intensity environments and owns ambiguous problems end-to-end. You're energized by bridging engineering and AI research to shape Claude Code's future and raise engineering standards.

Requirements

• 10+ years of software engineering experience as Staff/Principal engineer or equivalent
• Architected and owned complex, high-stakes systems serving multiple teams
• History of setting technical direction through design docs and architectural decisions
• Thrive in high-intensity environments with fast iteration cycles
• Take full ownership of ambiguous, open-ended problems with minimal direction
• Power user of agentic coding tools with intuition for model capabilities
• Able to dive into unfamiliar domains like ML systems and research workflows quickly
• Care deeply about correctness and reliability and raising engineering standards
• Energized by working at the boundary of engineering and AI research
• Bachelor's degree or equivalent combination of education, training and experience