Staff+ Software Engineer, Auth & Identity
Core
Building the authentication, authorization, and identity platform that underpins every Anthropic product (API, Claude Code, Claude.ai, Enterprise), handling credential minting, access decisions, and identity for humans, service accounts, and autonomous agents.
Role type
Staff+ Software Engineer, Auth & Identity
Builds
Horizontal platform services for credential exchange, authorization controls, and identity records; vertical admin experiences for SSO, SCIM, roles, and API key policies.
Domain
Cloud Infrastructure / Security / Identity & Access Management (IAM)
Deliverable
production ML models | product features | infrastructure
Required skills
Backend or platform systems at scale, Identity/Authentication/Authorization, OAuth 2.0/OIDC/SAML/SCIM/JWTs, Workload identity federation, Policy engines (Cedar/OPA), RBAC, Multi-region architecture, High-traffic system ownership, Large-scale migrations, Product-focused platform design, AI tools in workflow
Preferred skills
Globally distributed databases, Go/Python/Rust/TypeScript, Enterprise identity integrations with major providers/cloud IAM
Responsibilities
Design credentials for agents and long-running autonomous workloads; Route access decisions through a unified authorization system with low latency and security; Build a first-class identity model for service accounts and agents; Implement global distribution and multi-region failover for mission-critical services; Deepen enterprise integration with login policies and recovery methods; Set technical direction for identity and access across the company.
Seniority
Staff+, hands-on IC with strategic influence
