Staff+ Software Security Engineer

At least 8 years of software engineering experience with deep security expertise, including leading complex security initiatives independently

Bachelor's degree in Computer Science or equivalent industry experience

Strong programming skills in Python or at least one systems language such as Go, Rust, or C/C++

Deep understanding of identity systems, cryptographic primitives, and secrets management

Working knowledge of Kubernetes security primitives including RBAC, namespaces, network policies, and service accounts

Experience leading cross-functional security initiatives and navigating complex organizational dynamics

Scope, design, and build complex security systems end to end, maintaining them through production and driving through ambiguous technical challenges with minimal oversight

Identify systematic risks through threat modeling and risk assessment, then build the controls and infrastructure that address them

Mentor engineers across the security team and broader engineering organization, contribute to hiring, and grow security engineering culture at Anthropic

Enable other teams to build their own security solutions by providing design pattern guidance and expanding security ownership beyond the security team

The Security Engineering team protects Anthropic's AI systems and maintains the trust of our users and society. We define the authentication architecture for our training infrastructure, design the cryptographic foundations that protect model weights and training data, and drive the developer security program that shapes how engineers build and ship software.

The team works across several areas that collaborate closely: identity and secrets management, developer security and supply chain, infrastructure security, and secure frameworks. You will own one or two of these areas and contribute to others, with your focus shaped by your strengths and the team's priorities. This is largely greenfield work, and you will help define the architecture.