Formal Verification Engineer

What MatX Is Building MatX's mission is to make the world's best AI models run as efficiently as allowed by physics, bringing the world years ahead in AI quality and availability. We build the full stack—from silicon and rack design through compilers, kernels, and ML models. We are seeking a Formal Verification Engineer to bring rigorous mathematical guarantees to our hardware and software at every layer of the stack. What You'll Do Here Apply model checking and formal property verification to RTL blocks, memory subsystems, and interconnects, providing complete coverage wherever possible, using tools such as JasperGold or VC-Formal. Develop and maintain machine-checked proofs for critical compiler transformations, ensuring correctness of lowering passes from our high-level programming model down to hardware Build embeddings of our hardware description languages and simulator models into interactive theorem provers (e.g. Lean 4, Rocq, Isabelle/HOL), and use those embeddings to prove functional correctness and microarchitectural properties directly against the designs Collaborate with architecture, compiler, and silicon verification teams to identify correctness properties worth proving and translate them into tractable proof obligations Drive methodology for integrating formal tools (JasperGold, SymbiYosys, or equivalent) into our existing practices Who You Are Hands-on experience with hardware model checking—writing SVA/PSL properties, running bounded or unbounded proofs, and closing out formal verification targets at block or subsystem level Practical experience with at least one interactive theorem prover (Lean, Coq, Isabelle/HOL, Agda, or similar) Experience embedding an existing language or IR into a theorem prover—whether an HDL, compiler IR, ISA, or similar—is a strong plus Experience with compiler correctness proofs or verified compilation (e.g. CompCert-style or translation validation) is a strong plus Comfort working across the hardware/software boundary: you understand both RTL microarchitecture and compiler IR design well enough to find the correctness properties that matter Able to work in a small team where the scope of what you own will be large and shift quickly Compensation The US base salary for this full-time position is determined based on a variety of factors including role, experience, location, job-related skills, and relevant education and training. Career length is only a guideline for compensation. 0–5 years of experience — $140,000–$220,000 + equity 5–10 years of experience — $140,000–$340,000 + equity 10+ years of experience — $140,000–$420,000 + equity Our offers allow candidates to swap cash for equity. What We Offer A Stake in Our Success — A cash/equity mix that fits your needs and option to do early exercise Health & Wellness — Company subsidized health, dental, vision, and life insurance; pre-tax HSA with generous company contribution Time To Recharge — 4 weeks paid time off (accrued), 12 company holidays, and 3 weeks remote/flexible work per year Support to Parents — Up to 12 weeks of paid parental leave, regardless of your path to parenthood Learning & Development — $1,500 yearly toward conferences, courses, and other learning opportunities Team Connection — Team lunches, quarterly off-sites, and regular town halls Financial Wellbeing — 401K and/or Roth IRA with 5% company contribution, even if you don't contribute Flexible Spending Accounts — Pre-tax spend accounts for medical, dependent care, parking, and transit Commute On Us — For those commuting up to 1 hour, put your rideshare cost on our company card MatX E[x]tras — $50/month to use on the perks you care about most Remote Perks — We work remotely Monday & Friday, supported by home-tech setup and remote wifi reimbursement 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 applicant's capacity to perform job functions in compliance with U.S. export control laws without obtaining a license from U.S. export control authorities. MatX does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies in response to job postings. No fee will be paid to third parties who submit unsolicited candidates directly to our hiring managers or People team, and any resumes submitted are deemed to be the property of MatX.