Staff + Software Security Engineer, Secure Frameworks

The role

Staff + Software Security Engineer, Secure Frameworks at Anthropic in San Francisco, CA, New York City, NY, or Seattle, WA. Design, build, and run security foundations used across Anthropic's fleet, including cryptographic frameworks, mTLS infrastructure, and authorization systems.

What you'll do

• Build critical security foundations including cryptographic frameworks, mTLS infrastructure, secure serialization, and authorization systems
• Partner with product, research, infrastructure, and other security teams to ensure frameworks integrate smoothly with lower-layer security controls
• Scope, design and build security services and libraries end-to-end, maintain them in production, and drive through ambiguous technical problems with minimal oversight
• Build and operate the zero-trust access gateway that fronts Anthropic's internal services
• Design and roll out authorization frameworks so services enforce least privilege consistently
• Mentor engineers, contribute to hiring, and grow security engineering culture across Anthropic

What it takes

• 8+ years of software engineering experience building security-relevant systems in production, including leading complex initiatives independently
• Strong programming skills in Go, Rust or Python
• Deep understanding of authentication and authorization systems: OAuth 2.0 / OIDC, JWTs, service-to-service auth, policy-based access control
• Hands-on experience with PKI, X.509, mTLS and workload identity
• Working knowledge of applied cryptography: choosing and composing primitives correctly, key management, and the ways libraries fail in practice
• Experience shipping and operating high-reliability services on Kubernetes across cloud and on-prem environments, including being on call for them

What you'll bring

How we treat you

Competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues.

How to apply

Apply directly on Anthropic's site. We link straight through — no resume parsing, no profile to fill out.

This listing is aggregated from a third-party source and its summary may be auto-generated, so details can be inaccurate or out of date. ForGood is not the employer and is not liable for the content — please verify everything on Anthropic's official posting before applying.