Mechanical Energy Storage, BTM R&D

About Us

We exist to make humanity more free. Technology has historically given people more time for the things they want to do, instead of things they have to do. Powerful AI will be the biggest lever for human choice we've ever built—but only if models are aligned with what humanity actually wants. We're singularly focused on delivering 10 to 100s of GWs of compute faster than anyone else, rethinking every layer of the stack. We acquire power, design and build data centers, and operate them—with teams spanning hardware and software. Speed and scale are our key differentiators. Come be a part of building civilization-scale infrastructure for AI.

We hire people who care deeply about this problem space.

How We Operate

• Extreme ownership. Full autonomy. Own things end to end, often taking on scope outside your core role without being asked to get things done.
• Velocity. We drive everything forward as fast as possible.
• First principles. Challenge every assumption. Zero analogy thinking, no egos, the best idea wins.
• Love of the game. The frontier of AI is the most interesting problem of our time. We put in long hours at high intensity to push the frontier forward.

About the Role

• Engineer mechanical design for energy storage: BESS enclosures, thermal management, and site integration behind the meter.
• Own thermal design: cooling for containers and enclosures across climates, validated rather than vendored.
• Integrate storage mechanically into the campus: pads, clearances, fire separation, and service access engineered.
• Review vendor systems rigorously: what the datasheet claims versus what the fleet will live with.

Requirements

The below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly, tell us where you would.

• You've done mechanical engineering for BESS, power electronics, or thermal-critical enclosures.
• You've engineered thermal management validated by test.
• You know the safety codes shaping storage siting, NFPA 855 among them, and design to them.
• You evaluate vendor equipment beyond the brochure.
• You've supported field deployment of your designs.

• Bonus: Lithium-ion thermal behavior. CFD. Fire suppression interfaces. Utility-scale storage projects.

Pay

Compensation Range: $169K - $208K