Performance Engineer, Inference Systems

Highlights

• Help serve Claude to millions across Anthropic products and cloud platforms.
• Close gaps between actual fleet performance and theoretical rooflines.
• Own correctness checks ensuring Claude outputs are right, not just fast.

What they offer

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

Ideal candidate

A performance-minded systems thinker who loves cross-layer investigation and treats correctness as part of performance, thriving on evidence-driven influence across teams.

Requirements

• Hands-on performance engineering experience with profiling, roofline analysis and root-cause investigation
• Proficiency in Python and ability to contribute to large production codebases
• Solid data analysis skills with SQL, pandas or similar to turn telemetry into findings
• Ability to communicate quantitative results clearly in writing to influence priorities
• Genuine interest in correctness: numerics, evaluation design and regression detection
• Bachelor's degree or equivalent combination of education, training and experience