Job Details

Security Engineer, Operating Systems

Join Anthropic as an Operating Systems Security Engineer to harden and secure the OS layer of our AI infrastructure. You will design and implement OS‑level security controls—from kernel hardening to runtime protection—to ensure our systems withstand sophisticated attacks while maintaining the performance required for large‑scale AI model training.

About Anthropic

Anthropic's mission is to create reliable, interpretable, and steerable AI systems that are safe and beneficial for users and society. Our team is a quickly growing group of researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

What You'll Do

• Design and implement hardened OS configurations for AI workloads across diverse hardware platforms
• Develop kernel security policies using SELinux, AppArmor, custom Linux Security Modules, and runtime enforcement mechanisms
• Implement and maintain full‑disk encryption solutions for diverse storage systems
• Build security infrastructure for AI systems, research environments, and production services
• Build secure network stacks with appropriate isolation and segmentation
• Create OS‑level attestation and integrity monitoring systems
• Develop security patches, custom kernel modules, and kernel hardening configurations
• Design secure boot processes and trusted execution environments
• Work with container teams to ensure proper workload isolation at the kernel level
• Design privilege separation and mandatory access control policies
• Implement secure update mechanisms for OS components
• Build tooling for security configuration management and compliance verification

Who You Are

• 5+ years of experience in operating systems security or kernel development
• Deep knowledge of Linux internals, including kernel subsystems and security frameworks (SELinux, AppArmor, seccomp, etc.)
• Experience with kernel hardening techniques and exploit mitigation
• Strong programming skills in C and systems programming languages
• Experience with eBPF for security monitoring and enforcement
• Understanding of virtualization and containerization security
• Track record of identifying and fixing OS‑level security vulnerabilities
• Experience with security‑focused Linux distributions

Strong Candidates May Also Have

• Kernel development experience or contributions to the Linux kernel
• Experience with real‑time or embedded operating systems
• Knowledge of hardware security features and their OS integration (TPM, HSM, secure enclaves)
• Experience with confidential computing and memory encryption technologies (SEV, TDX, SGX)
• Background in vulnerability research, exploit development, or fuzzing
• Experience with formal methods for OS verification

Annual Salary

$300,000—$405,000 USD

Logistics

Education requirements: at least a Bachelor's degree in a related field or equivalent experience.

Location‑based hybrid policy: staff are expected to be in one of our offices at least 25% of the time, with some roles requiring more in‑office presence.

Visa sponsorship: we sponsor visas and will make every effort to secure a visa if an offer is made.

We encourage you to apply even if you do not meet every single qualification. People from underrepresented groups may experience imposter syndrome; we strive for diverse perspectives on our team.

Deadline to apply: None (rolling basis).

Job Details

• Seniority level: Mid‑Senior level
• Employment type: Full‑time
• Job function: Information Technology
• Industries: Research Services
• Location: San Francisco, CA

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