← All roles

Senior Staff Software Engineer, API

Anthropic· Engineering & Design - Product
Apply on company site
Hybrid (San Francisco, CA and New York City, NY), Hybrid (New York City, NY; San Francisco Bay Area)$405k - $485kFull-timePosted 7mo ago

About the role

Senior Staff Software Engineer leading the Claude API development platform, serving as the senior-most individual contributor across API Engineering to define technical direction, drive multi-team initiatives, and partner with Research, Inference, Platform, Infrastructure, and Safeguards for reliable, scalable API delivery.

Responsibilities

  • Define and drive multi-year technical strategy for the Claude API, setting direction across API Core, Capabilities, Knowledge, Distributability, and Agents.
  • Identify and personally lead the highest-complexity, highest-impact engineering initiatives spanning multiple teams.
  • Serve as the primary technical decision-maker for major architectural decisions with org-wide scope.
  • Partner with Research to evaluate and integrate frontier capabilities; work with Inference and Platform for reliable delivery at scale; collaborate with Infrastructure and Safeguards for reliability, security, and responsible deployment.
  • Mentor and develop Staff-level engineers across the org.
  • Drive alignment across Product, GTM, Safety, and beyond while proactively identifying and addressing systemic technical risks.

Qualifications

  • Have 12+ years of engineering experience with a clear track record operating at Staff or Senior Staff level.
  • Have demonstrably shaped technical strategy for large-scale API or distributed systems platforms.
  • Drive the highest-leverage technical outcomes without formal authority—you lead through influence, quality of thinking, and trust.
  • Have deep expertise in distributed systems and API architecture, and are effective writing design docs, making architectural calls, and coding in critical paths.
  • Are highly effective across org boundaries—you build trust with Research, Inference, Infrastructure, Safeguards, and business stakeholders alike.
  • Bring strong product instincts and a craftsperson's approach to API design; you communicate clearly with both technical and non-technical audiences.

Skills

Required:Engineering leadership at scaleDistributed systemsAPI design and architecture

Benefits

  • Competitive compensation
  • Generous vacation and parental leave
  • Flexible working hours
  • Office space for collaboration
  • Optional equity donation matching
Last updated Jul 8, 2026. Interested? Apply on the company site.

About Anthropic

building reliable, interpretable, and steerable AI systems

Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.

ai-infrastructure-and-developmentliquid-ai-recruiting-targetsetter-30setter-30-2026-q1wing-list-2026wing-list-2026-giga-stage
Company profileWebsite

More open roles at Anthropic