Senior Staff Software Engineer, API

Anthropic seeks a Senior Staff Software Engineer to serve as the senior-most individual contributor across API Engineering. The role sets technical direction for the Claude API, defining multi-year strategy and leading high-complexity initiatives across API Core, Capabilities, Knowledge, Distributability, and Agents. The engineer partners with Research, Inference, Platform, and Safeguards to ensure reliable, capable AI distribution at scale.

Candidates must have 12+ years of engineering experience with track record at Staff or Senior Staff level, shaping technical strategy for large-scale API or distributed systems platforms. Expertise in distributed systems and API architecture required, along with ability to influence without authority and collaborate across org boundaries. Strong product instincts and communication skills for technical and non-technical audiences essential. Bachelor's or equivalent in relevant field.