Formal Verification Engineer

MatX • Mountain View, CA

88d • $120,000 - $425,000 • Hybrid

About The Position

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.

Requirements

• 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).
• 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.
• 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.

Nice To Haves

• 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.

Responsibilities

• 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.

Benefits

• A flexible cash equity compensation mix that fits your needs
• Company subsidized health, dental, vision, and life insurance; pre-tax HSA with generous company contribution
• 4 weeks paid time off (accrued)
• 12 company holidays
• 3 weeks remote/flexible work per year
• Up to 12 weeks of paid parental leave, regardless of your path to parenthood
• $1,500 yearly toward conferences, courses, and other learning opportunities
• Team lunches, quarterly off-sites, and regular town halls
• 401K and/or Roth IRA with 5% company contribution, even if you don't contribute
• Pre-tax spend accounts for medical, dependent care, parking, and transit
• For those commuting up to 1 hour, put your rideshare cost on our company card
• $50/month to use on the perks you care about most
• We work remotely Monday & Friday, supported by home-tech setup and remote wifi reimbursement
• Company-subsidized Medical (Kaiser or Anthem) for employees & dependents, Guardian Dental and Vision insurances for employee & dependents, and life insurance (employee only), plus HSA and FSA offerings via Lively.
• Choose from Roth IRA/ 401K (or both) retirement plans with up to 5% company contribution to 401K (even if you don't contribute).
• 100% company-paid life insurance (up to $300K) and long-term disability insurances.
• $1500 Professional Development Budget (per year)
• MatX provides onsite team lunch & dinner Monday - Friday, with your choice of ordering via WeBox, Specialty’s or via our reimbursement system
• Commute on our company Uber account, or reimburse your train rides. Either way, we pay 100% for your daily commute.
• $50/mo to use on the perk you value most
• $35/mo for cellular and $40/mo for wifi
• 100% paid mental health benefit via SpringHealth and Guardian EAP.
• Up to 12 weeks paid parental leave regardless of path to parenthood, 10 weeks pregnancy disability leave, flexible return-to-work hours, and Benepass reproductive health & parental benefit.
• Up to $20K/month plus a dedicated internal AI Tooling Team to support your productivity

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Education Level: No Education Listed