Staff+ Software Security Engineer

Anthropic's mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole.

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.

You will own one or two areas: developer security and supply chain, identity and secrets management, infrastructure security, and secure frameworks. This is largely greenfield work, and you will help define the architecture.

• 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.

You may be a good fit if you have:

• 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.
• Outstanding communication skills, translating technical concepts effectively across all levels of the organization.
• A track record of bringing clarity and ownership to ambiguous technical problems and driving them to resolution.
• Low ego and high empathy, with a history of growing the engineers around you and supporting diverse, inclusive teams.
• Passion for AI safety and the role security engineering plays in building trustworthy AI systems.

Annual Salary: $405,000—$485,000 USD.

Anthropic offers competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space.

Apply via the Greenhouse link. Applications are received on a rolling basis.