# Staff + Software Security Engineer, Secure Frameworks

**Company**: Anthropic
**Location**: San Francisco, CA
**Work arrangement**: hybrid
**Experience**: staff
**Job type**: full-time
**Salary**: $32,000-$485,000 USD
**Category**: Engineering
**Industry**: Technology
**Wikidata**: https://www.wikidata.org/wiki/Q116758847

**Apply**: https://job-boards.greenhouse.io/anthropic/jobs/5440475008?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_8146e9bb-12a

## Description

## Job Overview

You will design, build, and run security foundations used across Anthropic's fleet, from threat model through production, on-call, and adoption. Much of the work is greenfield: our infrastructure is growing quickly, and the timelines are compressed, so you will help define the architecture rather than inherit it.

## Responsibilities

- Build critical security foundations including cryptographic frameworks, mTLS infrastructure, secure serialization, and authorization systems, designed to prevent entire classes of vulnerabilities

- 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 instead of each inventing its own access controls

- Own cryptographic frameworks and libraries

- Mentor engineers, contribute to hiring, and grow security engineering culture across Anthropic

## Requirements

- 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

- A track record of bringing clarity and ownership to ambiguous technical problems and driving them to resolution across teams

- A strong sense of developer experience

- Clear communication across all levels of the organization

- Passion for AI safety and the role security engineering plays in building trustworthy AI systems

## Benefits

- Competitive compensation and benefits

- Optional equity donation matching

- Generous vacation and parental leave

- Flexible working hours

- Lovely office space

## Location

San Francisco, CA | New York City, NY | Seattle, WA

## Skills

### Required
- Go
- Rust
- Python
- OAuth 2.0
- OIDC
- JWTs
- PKI
- X.509
- mTLS
- Kubernetes

### Nice to have
- security frameworks
- zero-trust access gateway
- BeyondCorp
- ML infrastructure

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/anthropic/jobs/5440475008?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)