Staff Security Frameworks Engineer - Zero Trust & Crypto

VulnU; New York, Northern (NY, KY); Hybrid; USD 150,000 - 210,000; Full time

Job summary

Anthropic is seeking a senior security engineer to design, build and operate foundational security infrastructures across our fleet. You will own cryptographic frameworks, mTLS, and authorization systems, guiding architecture from threat modeling to production.

You'll partner with product, research, and infra teams to deploy least-privilege access controls and a zero-trust gateway, mentor engineers, and help grow our security engineering culture across the company.

Qualifications

• 8+ years of software engineering experience building security-relevant systems in production.
• Strong programming skills in Go, Rust or Python.
• Deep understanding of authentication and authorization systems: OAuth 2.0 / OIDC, JWTs, service-to-service auth.
• Hands-on experience with PKI, X.509, mTLS and workload identity.
• Experience shipping and operating high-reliability services on Kubernetes across cloud and on-prem environments.
• Ability to own cryptographic frameworks and libraries.

Responsibilities

• Design, build and run security foundations used across Anthropic's fleet, from threat model through production, on-call and adoption.
• 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.
• Partner with product, research, infrastructure, and other security teams to ensure frameworks integrate smoothly with lower-layer security controls.

Skills

Go

Rust

Python

Education

Bachelor’s degree

Tools

Kubernetes

PKI

Job description

Anthropic is seeking a senior security engineer to design, build and operate foundational security infrastructures across our fleet. You will own cryptographic frameworks, mTLS, and authorization systems, guiding architecture from threat modeling to production.

You'll partner with product, research, and infra teams to deploy least-privilege access controls and a zero-trust gateway, mentor engineers, and help grow our security engineering culture across the company.