Senior Mechanical Engineer - AI Compute & Liquid‑Cooled Racks

MatX; Mountain View (CA); Hybrid; USD 250,000 - 600,000; Full time

Benefits offered by this job

4 weeks PTO

Health insurance for employees & deps

Company paid life insurance

Professional development budget

Commute on us

Job summary

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.

You will design rack-scale hardware, develop 3D models, manage GD&T documentation, and collaborate with manufacturing partners.

Qualifications

• 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.

Responsibilities

• Develop AI compute trays, rack enclosures, and mechanical assemblies per OCP Rack specs.
• Produce 3D models and 2D drawings; maintain mechanical BOM, drawings, and GD&T docs through NPIs.
• Design and integrate liquid cooling hardware including cold plates, manifolds, and CDU interfaces.
• Support mechanical integration of compute trays into rack systems across power, liquid cooling, cabling, interfaces.
• Carry out tolerance stack-up analyses from package to rack for proper fit and assembly.
• Take hands-on role in EVT/DVT/PVT prototype builds, bring-up and debug.
• Contribute to DFM/DFA with manufacturing partners.

Skills

Mechanical design

Rack-scale hardware

OCP Open Rack

Liquid cooling

3D CAD (SolidWorks)

GD&T

Sheet metal/extrusion/casting

Tools

SolidWorks

GD&T

Job description

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.

You will design rack-scale hardware, develop 3D models, manage GD&T documentation, and collaborate with manufacturing partners.