Mechanical Engineer- Advanced Engineering

At Fluidstack, we’re building the infrastructure for abundant intelligence. We partner with top AI labs, governments, and enterprises - including Mistral, Poolside, Black Forest Labs, Meta, and more - to unlock compute at the speed of light.

We’re working with urgency to make AGI a reality. As such, our team is highly motivated and committed to delivering world-class infrastructure. We treat our customers’ outcomes as our own, taking pride in the systems we build and the trust we earn. If you’re motivated by purpose, obsessed with excellence, and ready to work very hard to accelerate the future of intelligence, join us in building what's next.

As a Mechanical Engineer in the Advanced Engineering group, you will architect the future of data center infrastructure, designing innovative High and Low Voltage Direct Current (HVDC/LVDC) electrical systems. You will pioneer thermal and magnetic design solutions that ensure the reliable power delivery and operation of millions of GPUs.

• Lead mechanical and thermal design of HVDC/LVDC power distribution systems and high-power electronics for multi-gigawatt GPU data center deployments

• Design enclosures, structural assemblies, and integrated cooling solutions for high-voltage DC power equipment and power electronics

• Perform thermal analysis (CFD) and develop heat dissipation strategies for high-power density systems, including cold plates, heat exchangers, busbars, and airflow management

• Solve high-current busbar design challenges including conductor sizing, thermal interface optimization, and electrical contact resistance management for multi-megawatt systems

• Address EMI/EMC shielding, creepage/clearance requirements, and mechanical integration of power modules, capacitors, and semiconductor devices in compact, high-reliability packages

• Define and execute mechanical and thermal validation testing including structural FEA, thermal cycling, vibration, and environmental qualification for power electronics assemblies

• 7+ years of mechanical design experience in power systems, high-power electronics, or energy infrastructure with strong thermal management background

• Deep expertise in structural design, heat transfer, CFD analysis, electronics packaging, and outdoor-rated electrical equipment enclosures

• Proficient in CAD software (SolidWorks, AutoCAD) and thermal simulation tools (Ansys Fluent or similar), familiar with high-voltage DC systems and NEC, UL, or IEC standards

• Self-starter who thrives in fast-paced environments and can drive complex thermal-mechanical-electrical integration projects independently with minimal oversight

• Strong understanding of materials for high-power applications including copper/aluminum alloys, thermal interface materials, potting compounds, and high-voltage insulation systems

• Experience with Design For Manufacturing/Assembly principles, manufacturing processes (sheet metal, machining, casting), and bringing designs from prototype through to high-volume production

The salary range for this position is $200,000-$300,000 per year, depending on experience, skills, qualifications, and location. This range represents our good faith estimate of the compensation for this role at the time of posting. Total compensation may also include equity in the form of stock options.

We are committed to pay equity and transparency.

Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.