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Staff+ Software Engineer, Auth & Identity

Anthropic· Engineering & Design - Product
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Hybrid (San Francisco, CA), Hybrid (New York City, NY)$405k - $485kFull-timePosted 2mo ago

About the role

Senior platform engineer focused on authentication, authorization, and identity services for Anthropic products. Owns high-traffic identity systems end-to-end, shaping technical direction across authentication, authorization, identity models, and enterprise integrations.

Responsibilities

  • Own critical, high-traffic systems end to end, from design through rollout, operations, and iteration
  • Shape the technical strategy for how identity and access work across Anthropic
  • Design credentials for agents and long-running autonomous workloads
  • Route every access decision through a unified authorization system, with low latency, security guarantees, and multi-region resilience
  • Build a first-class identity model for service accounts and agents, and linking those identities to other identity and auth systems
  • Support global distribution and multi-region failover for mission-critical services
  • Deepen enterprise integration: login policies and recovery methods, self-service allowlisting, and tighter integrations with providers
  • Work closely with product, security, infrastructure, and product teams to set technical direction

Qualifications

  • 8+ years of experience building and operating backend or platform systems at scale, ideally including identity, authentication, authorization, or security-adjacent infrastructure
  • Experience with OAuth 2.0 and OIDC, SAML, SCIM, JWTs and token exchange, workload identity federation, policy engines such as Cedar or OPA, or RBAC and resource-level access control models
  • Strong focus on reliability and security; design for on-call, failure modes, revocation, and availability as a baseline
  • Experience owning large migrations in live, high-traffic systems (shadow modes, incremental rollouts, retirement of legacy paths)
  • Product-focused approach to platform work; building primitives easy for others to adopt with documentation and self-service
  • Ability to navigate ambiguity, make independent technical decisions, and communicate with cross-functional partners
  • Familiarity with using AI tools as part of software development workflow

Skills

Required:Backend system design and operationOAuth 2.0 / OIDCJWT / token exchange
Nice to have:SAMLSCIMPolicy enginesRBAC / access control models

Benefits

  • Competitive compensation and benefits
  • Optional equity donation matching
  • Generous vacation and parental leave
  • Flexible working hours
  • Office space for collaboration
Last updated Aug 26, 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.

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