Platform Security Engineer, Operating Systems

Anthropic•Seattle, WA

5d•Hybrid

About The Position

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. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. We're looking for an Operating Systems Security Engineer to harden and secure the OS layer of our infrastructure. You'll be responsible for designing and implementing OS-level security controls, from kernel hardening to runtime protection, ensuring our systems can withstand sophisticated attacks while maintaining the performance required for AI model training. This is a hands-on role where you'll work with cutting-edge hardware and implement novel security solutions for environments that don't exist anywhere else in the world. You'll need to balance extreme security requirements with the operational needs of researchers training models at unprecedented scale.

Requirements

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

Nice To Haves

Kernel development experience or contributions to 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 (SEV, TDX, 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 (TPM, HSM, secure enclaves)

Responsibilities

Design and implement hardened OS configurations for AI workloads across diverse hardware platforms
Minimize attack surfaces by removing as many unnecessary components as possible from kernelspace and userspace
Develop kernel security policies using SELinux, AppArmor, and 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, 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