Platform Security Engineering, Operating Systems

Details

Anthropic is looking for an Operating Systems Security Engineer to harden and secure the operating system layer of its infrastructure. The role focuses on designing and implementing OS-level security controls, from kernel hardening to runtime protection, while maintaining the performance required for AI model training. This is a hands-on position involving cutting-edge hardware and security solutions for large-scale AI research and production environments.

Responsibilities

• Design and implement hardened OS configurations for AI workloads across diverse hardware platforms.
• Minimize attack surfaces by removing unnecessary components from kernel space and user space.
• 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.
• Create OS-level attestation and integrity monitoring systems.
• Apply security patches and develop patches for 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.
• Serve as a subject-matter expert for OS security questions and designs.

Requirements

• Deep knowledge of Linux internals, including kernel subsystems and security frameworks such as SELinux, AppArmor, and seccomp.
• 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.
• A track record of identifying and fixing OS-level security vulnerabilities.
• Experience with security-focused Linux distributions.
• Bachelor’s degree or an equivalent combination of education, training, and experience.
• A field of study relevant to the role, as demonstrated through coursework, training, or professional experience.

Preferred Qualifications

• 5+ years of experience in operating systems security or kernel development.
• 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.
• Experience with secure boot technologies.
• Experience with confidential computing and memory encryption technologies, including SEV, TDX, and SGX.
• Background in vulnerability research, exploit development, or fuzzing.
• Experience with formal methods for OS verification.
• Knowledge of hardware security features and their OS integration, including TPM, HSM, and secure enclaves.

Benefits

Anthropic offers competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and office spaces for collaboration. Anthropic currently expects staff to work from one of its offices at least 25% of the time, although some roles may require more office time. Anthropic sponsors visas and retains an immigration lawyer to assist with visa matters, although sponsorship is not guaranteed for every role or candidate.