Lead Mechanical Engineer (Data Center Infrastructure)

Confirmed live in the last 24 hours

Giga Energy

Remote

Posted April 1, 2026

Job Description

Why Join Giga

The Pace: We're building at a speed most companies talk about but never actually operate at. If you've been bored somewhere else, you won't be here.
The Impact: Every person at Giga touches the work that matters. No layers, no waiting for approval chains. You'll see your fingerprints on what we ship.
The Team: A team of operators defining the future of AI infrastructure. We recruit A-players from the most innovative companies in the world, and they choose Giga because the work here means more.
The Moment: AI doesn't run without power, and that's us. Giga is the picks and shovels behind the AI revolution. This industry is about to explode, and you'll be in the room where it's already happening.

What you'll do

Giga's mission is to manufacture data centers to support the AI ramp. We're moving beyond traditional construction to a product-based approach, designing and mass-producing high-performance infrastructure that can keep pace with the exponential demand for compute. As Lead Mechanical Engineer, you'll own the mechanical design of these next-generation facilities.

This is a rare opportunity to define the mechanical DNA of a rapidly scaling infrastructure company. You won't just be managing a single build—you'll be creating the Plan of Record (POR) for Giga Data Centers, a standardized, manufactured product that will be deployed globally.

You'll set the standard for high-density AI cooling, designing liquid cooling loops, thermal management systems, and mechanical infrastructure that can handle the most demanding compute workloads on the planet. The AI ramp is the defining industrial challenge of our time, and you'll build the engine that powers it. Your designs will be manufactured and deployed rapidly, with direct impact visible across hundreds of facilities.

Where you'll work

If based outside of our Houston, Long Beach, Reno, or San Francisco hubs, this role will be based remotely from your home office. You must be willing to travel as needed to our job sites and to one of our hub offices.

Responsibilities

Develop and maintain the mechanical POR for Giga Data Centers, defining the "Gold Standard" design that enables manufacturing of reliability and efficiency at scale
Author and own the internal engineering library including technical specifications and Basis of Design documents, deciding what we build and how we measure it
Design to global and local standards, leveraging ASHRAE TC 9.9 to define environmental envelopes for AI hardware and ensuring compliance with ASHRAE 90.1 for energy efficiency
Guide external engineering firms to localize designs while maintaining strict adherence to core performance intent and standardization requirements
Validate airflow patterns and rack-level thermal performance using computational fluid dynamics, ensuring compliance with ASHRAE thermal guidelines for Class A1-A4 environments
Execute rigorous hydraulic analysis and thermal load flow studies, conducting pipe stress analysis per ASME B31 standards to ensure system integrity under thermal expansion and seismic events
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