What MatX Is Building MatX designs hardware tailored for the world’s best AI models. Our hardware will make a given level of intelligence available 3-5 years sooner. We are developing vertically integrated full-stack solutions from silicon to systems, including hardware and software to train and run the world’s largest models.

This role owns end-to-end system security architecture for MatX hardware and software platforms — translating high-level security requirements into concrete, implementable designs across hardware, firmware, and software, and driving execution across teams.

What You'll Do Here

• Translate high-level security requirements into end-to-end system designs
• Author security architecture and design documents across Hardware, Firmware, and Software
• Perform system-level threat modeling and define mitigations
• Decide Hardware vs. Software security placement and evaluate tradeoffs
• Define requirements for new hardware security features when needed
• Co-design secure systems with hardware, firmware, and software teams
• Design and review secure boot, key management, and isolation mechanisms
• Lead cross-team security reviews and alignment
• Provide clear, risk-based guidance to engineering leadership

Who You Are

• 5+ years in system, hardware, or HW/SW security
• Experience defining security architectures and writing design docs
• Strong knowledge of secure boot, roots of trust, crypto, and isolation
• Proven ability to make HW/SW security tradeoffs
• Track record of leading across multiple engineering teams
• Strong coding skills in Rust and/or C/C++, with proficiency in Python
• This is a hybrid role that will require you to work from our Mountain View, CA office 3 days a week on Tuesday through Thursday

What We Offer

As part of our dedication to the diversity of our team and our focus on creating an inviting and inclusive work experience, MatX is committed to a policy of Equal Employment Opportunity and will not discriminate against an applicant or employee on the basis of race, color, religion, creed, national origin or ancestry, sex, gender, gender identity, gender expression, sexual orientation, age, physical or mental disability, medical condition, marital/domestic partner status, military and veteran status, genetic information or any other legally recognized protected basis under federal, state or local laws, regulations or ordinances. All candidates must be authorized to work in the United States and work from our offices in Mountain View Tuesdays-Thursdays. This position requires access to information that is subject to U.S. export controls. This offer of employment is contingent upon the applicants capacity to perform job functions in compliance with U.S. export control laws without obtaining a license from U.S. export control authorities.