Mechanical Engineer - AI Rack Scale Systems

What MatX Is Building

MatX is building next-generation AI compute infrastructure for large-scale LLM training and inference. We are looking for a hands-on Mechanical Engineer to design, develop, and validate mechanical systems for our rack-scale AI platform from compute trays and rack enclosures to fully liquid-cooled infrastructure.

What You'll Do Here

• Develop AI compute trays, rack enclosures, and mechanical assemblies in accordance with OCP Rack specifications
• Produce 3D models and 2D drawings at the component, sub-assembly, and assembly levels, and maintain the mechanical BOM, drawing packages, and GD&T documentation throughout the NPI stages
• Design and integrate liquid cooling hardware including cold plates, manifolds, quick-disconnect fittings, and CDU-to-rack interfaces
• Support the mechanical integration of compute trays into rack systems across power, liquid cooling, cabling, and connector interfaces
• Carry out tolerance stack-up analysis at multiple levels, from package through rack, to confirm proper fit and straightforward assembly
• Take a hands-on role in EVT, DVT, and PVT prototype builds, bring-up, and debug
• Apply DFM/DFA principles and contribute to design reviews with JDM/ODM manufacturing partners

Who You Are

• 5+ years of mechanical engineering experience in server, data center, or AI compute hardware
• Experience designing rack-scale hardware — compute trays, rack enclosures, or server platforms
• Familiarity with OCP Open Rack standards
• Experience with liquid cooling systems — cold plates, manifolds, or CDU interfaces
• Proficiency in 3D CAD (SolidWorks or equivalent) and GD&T
• Familiarity with sheet metal, extrusion, casting, and machining manufacturing processes

Bonus Points

• Experience with high-power AI accelerator platforms
• Hands-on cold plate manufacturing experience
• Experience working with JDM/ODM partners
• Knowledge of liquid cooling reliability standards and leak testing methodologies

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.
• 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.

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.