Staff+ Software Engineer, Auth & Identity

The shape of it

In the posting’s own words

The Auth & Identity team builds the authentication, authorization, and identity platform that underpins every Anthropic product: the API, Claude Code, Claude.ai, and our Enterprise offerings. Every login, API key, OAuth token, access decision, and organization record flows through the systems we own. As Claude moves from a chat product to an agentic platform, we are defining what identity and access look like when the actor is a human, a service account, or an autonomous agent acting on someone's behalf.

What it asks for · 2

• Have 8+ years of experience building and operating backend or platform systems at scale, ideally including identity, authentication, authorization, or security-adjacent infrastructure.
• Experience with globally distributed databases and multi-region service architecture.

Also a plus

• Experience with globally distributed databases and multi-region service architecture.
• Experience working in Go, Python, Rust, or TypeScript across a rapidly changing codebase.
• Prior work on enterprise identity integrations with major identity providers and cloud IAM systems.

What the job covers

• Designing credentials for agents and long-running autonomous workloads.
• Routing every access decision through a unified authorization system, with low latency, security guarantees, and multi-region resilience.
• Building a first-class identity model for service accounts and agents, and linking those identities to other identity and auth systems.
• Global distribution and multi-region failover for some of the company’s most mission-critical services.
• Deepening enterprise integration: login policies and recovery methods, self-service allowlisting, and tighter integrations with providers.

Tools and skills named

Words the posting leans on

• identity14×
• systems9×
• product7×
• service7×
• access6×
• every6×
• agents5×
• authorization5×
• enterprise5×
• platform5×
• auth4×
• experience4×
• model4×
• workload4×
• controls3×
• exchange3×

Counted from the posting after the mission statement and the legal notices are set aside. The ones near the top are the ones a screener is looking for.

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