Software Engineer, AI Tooling

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 custom silicon for training and running the world's largest AI models, with hardware/software co-design across ISA, RTL, simulator, compiler, and kernels. The AI tooling team sits across that whole stack and owns the agent harnesses and shared workflows that turn general-purpose coding agents into ones maximally useful on each layer.

About the position

Frontier agents are stronger on our Rust and Python than on our Bluespec and SystemVerilog. What context, tools, and checks make an agent trustworthy on a testbench or a timing report, and how do you know? Very few people anywhere have worked through these questions on a chip that has to tape out, with the engineers who sign off on it working next to them. You'd work side-by-side with our hardware engineers, learn how RTL design, design verification (DV), and physical design (PD) work here, codify what's already working, and build what's missing.

What You'll Do Here:

• Close the gap where agents are worst at hardware engineering work. Pair with RTL, DV, and PD engineers while they work, watch where their agents stumble, and identify and ship context, tools, or harness improvements.

• Build tools to address problems that only exist now that agents write code, e.g. a review tool that breaks a large agent-generated diff into reviewable pieces.

• Build the eval loop for our AI tooling by taking bugs out of our repo's history, replaying them against different agent configurations, and using the results to decide what we adopt.

Who You Are:

• Have RTL design, DV, or PD fluency, or will build it fast. You don't need to have taped out a chip, but you'd be working RTL, DV, and PD problems daily and judging to what extent an agent’s answer is accurate.

• Use coding agents heavily and have strong opinions on what you let them do, what you don't, and how you verify their work.

• Built engineering workflows (methodology, flow automation, review tooling, agent harnesses) that other engineers adopted and kept.

• Notice LLM agents asserting something confidently wrong and modify their harness in response.

Bonus Points If You Have:

• Built tooling or automation for chip design flows.

• Are familiar with Bluespec or another high-level HDL, or with architecture and performance simulators.

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.

• Early Career - $160,000 - $275,000 + equity

• Mid Career - $175,000 - $450,000 + equity

• Senior Career - $275,000 - $600,000 + equity

What We Offer

• Time off: 4 weeks PTO (accrued) + 12 company Holidays + up to 3 weeks remote work

• Health: 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.

• Financial Security: Choose from Roth or pre-tax 401K (or both) with a 5% company contribution (even if you don't contribute), 100% company-paid life insurance (up to $300K), long-term disability and travel insurance.

• Professional Development: $1500 per year Professional Development Budget

• Team Meals: MatX provides onsite team lunch & dinner Monday - Friday, with your choice of ordering via WeBox, Specialty’s or via our reimbursement system

• Commute on Us: We pay 100% for your daily commute. Commute via our company rideshare account, reimburse public transportation, or get a Fasttrak card (or all three)

• MatX E[x]tras: $50/mo to use on the perk you value most

• Cell & Internet Reimbursement: $35/mo for cellular and $40/mo for wifi

• Remote Home Setup: Use our Amazon business account for up to $1000 in office setup purchases.

• Mental Wellbeing: 100% paid mental health benefit via SpringHealth and Guardian EAP.

• Support to Parents: Up to 12 weeks paid parental leave regardless of path to parenthood, 10 weeks pregnancy disability leave, flexible return-to-work hours, and a $6K Family Fund to cover fertility, surrogacy, adoption, menopausal health, preservation, family counseling and more.

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.

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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.

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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.