JOBS / Anthropic

Staff Software Engineer, Code RL

San Francisco, CA | New York City, NY | Seattle, WA

Role

This role involves driving reinforcement learning efforts for Claude's coding capabilities by designing APIs, frameworks, and infrastructure for agentic coding environments. Candidates must have deep Python expertise, experience designing intuitive APIs, and the ability to anticipate and prevent silent failure modes in complex research codebases.

Location: San Francisco, CA | New York City, NY | Seattle, WA
Employment: full time
Work pattern: hybrid
Seniority: mid

PythonAPI DesignReinforcement LearningSystem DesignTesting

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Source and currency

This vacancy came from the organization’s official Greenhouse feed. Source update: 2026-08-21T12:50:41-04:00. Check the employer’s page for the complete description, current availability and application terms.

Anthropic RESEARCH PROFILE ↗