Software Engineer - Kernels Mountain View, CA

MatX is on a mission to be the compute platform for AGI. We are developing vertically integrated full‑stack solutions from silicon to systems, including hardware and software to train and run the largest ML workloads for AGI. We primarily use the Rust programming language.

• Design and optimize kernels that interface directly with our hardware
• Work in partnership with our ML Research and Hardware Engineering teams
• Provide expertise and guidance on hardware architecture from a programmer's perspective, ensuring seamless integration with the software stack

• Bachelor of Computer Science or equivalent degree
• Experience optimizing software for specialized hardware, employing techniques such as parallelism, SIMD programming, C, assembly‑level optimization, or GPU/CUDA programming
• Language: at least one of assembly, C++, C, Zig, or Rust
• This is a hybrid role that will require you to work from our Mountain View, CA office 3 days a week, Tuesday through Thursday

• Experience implementing kernels for ML models such as Transformers
• Experience using and implementing distributed parallelism techniques such as All Reduce, All To All , data parallelism, tensor parallelism
• Familiarity with how compilers work

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 – $120,000–$200,000 + equity
• 5–10 years of experience – $120,000–$300,000 + equity
• 10+ years of experience – $120,000–$400,000 + equity

• A Stake in our success – a cash/equity mix that fits your needs and the option to do early exercise
• Health & Wellness – Company‑subsidized Health, Dental, Vision, and Life insurance; pre‑tax Health Savings Accounts with generous company contribution (even if you don’t)
• 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 your professional development e.g., conferences, courses, and other learning opportunities
• Team Connection – Team lunches, quarterly off‑sites, and regular town halls
• Financial Well‑being – 401K and/or Roth IRA, with 5% company contribution, even if you don’t!
• Flexible Spending Accounts – Pre‑tax spend accounts for medical, dental/vision, dependent care, parking, and transit expenses
• Commute On Us – For commuting up to 1 hour, the company covers rideshare cost and reclaims the drive‑time
• MatX Extras – $50 per month to use on the perks you care about most
• Remote Perks – We work remotely Monday & Friday, supported by home‑tech setup, and remote Wi‑Fi expense 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.