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Senior Staff Software Engineer, API

About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers,

Company

Anthropic

Location

San Francisco, CA; New York City, NY

Status

Open

Posted

2026-02-26T22:22:21+00:00

Anthropic's Claude Developer Platform team is hiring a Senior Staff Software Engineer as the senior-most individual contributor across API Engineering. The role sets multi-year technical strategy for the Claude API and leads the hardest cross-team initiatives, working with Research, Inference, Platform, Infrastructure and Safeguards across API Core, Capabilities, Knowledge, Distributability and Agents. The posting asks for 12+ years of engineering experience, prior Staff-level work, deep distributed-systems and API design expertise, and coding in critical paths. New York or Bay Area candidates are preferred.