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. MatX is seeking System Software Engineer to join our team as we create best-in-class silicon for high-performance and sustainable GenAI. Successful candidates for these roles will be responsible for delivering performant and functionally accurate silicon for MatX products across compute, memory management. High-speed connectivity and other key technologies.

The MatX host system software team owns everything that makes our AI silicon and systems usable: from Linux kernel drivers up through node and cluster management. We build integrated AI systems from custom silicon through fully deployed rack-scale infrastructure. Our firmware runs closest to the hardware: it brings boards to life, keeps them healthy in production, and gives the rest of the stack a trustworthy view of the platform.

What you'll do

Develop and extend board management firmware built on open-source firmware stacks

Enhance and maintain embedded firmware running on ARM microcontrollers, including code delivered by silicon partners

Own platform capabilities end to end: sensor monitoring, power and thermal management, firmware update, and hardware health reporting

Participate in board bring-up alongside hardware and system software teams, from first power-on through production

Debug across the firmware/hardware boundary using lab equipment and low-level tooling

What we're looking for

Strong embedded C development experience on ARM-based microcontrollers

Experience with real-time or bare-metal firmware: interrupts, timing constraints, and working within tight memory budget

Direct experience working with embedded firmware with a hyperscaler/datacenter.

Hands-on familiarity with board-level buses and management interfaces

Experience working within large existing firmware codebases — extending, integrating, and maintaining code you didn't originate

Comfort in a lab: schematics, scopes, and hardware that doesn't behave the way the documentation says

Ability to collaborate closely with hardware, silicon, and system software engineers

Nice to have

Experience with Linux-based board management controller firmware and its build systems

Familiarity with server platform management standards and protocols

Exposure to firmware security: secure boot, signed updates, attestation

Prior involvement in open-source firmware communities

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 - $400,000 + equity

Senior Career - $250,000 - $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.