Product Security Engineer, Operating System San Carlos, CA (on-site) About 1X We build humanoid robots that work alongside people to solve labor shortages and create abundance. The Role We are seeking a Product Security Engineer with expertise in operating system security to strengthen the foundation of our robotics platform. In this role, you will design and implement security features such as secure boot, trusted execution environments, and system service hardening. Your work will ensure that sensitive operations and data remain protected while enabling developers to follow security best practices. This position is critical to increasing the resilience and trustworthiness of our systems. You Will - Develop and maintain secure critical services for Linux systems - Implement secure boot chains using fused hardware keys with rollback protection - Integrate OP-TEE to safeguard sensitive assets including mTLS certificates and disk encryption keys - Harden system services using least-privilege operations, systemd features, namespacing, and syscall filtering - Build hardening templates and automation tools to streamline security enforcement for developers - Automate security validation processes within CI/CD pipelines - Design and enforce device access controls for Linux systems - Contribute and ship C/C++ code (or similar) to production environments Must Have - Strong experience with Linux operating system internals and security mechanisms - Hands-on expertise with secure boot and verified boot implementations - Familiarity with Trusted Execution Environments such as OP-TEE - Proven track record of applying least-privilege principles and hardening root-level services - Proficiency with systemd and sandboxing tools including namespacing, privilege restrictions, and syscall filtering - Experience designing developer-focused security tools, automation, and templates - Knowledge of device access control and Linux permissions management - Solid understanding of CI/CD security validation integration - Expertise in software development and code auditing - Experience with NVIDIA Orin or similar SoC platforms (preferred) Benefits & Compensation - Salary Range: $137,861 – $240,000 + Equity - Health, dental, and vision insurance - 401(k) with company match - Paid time off and holidays Equal Opportunity Employer 1X is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, ancestry, citizenship, age, marital status, medical condition, genetic information, disability, military or veteran status, or any other characteristic protected under applicable federal, state, or local law.