Commissioning Mechanical Lead, Data Centers

Fluidstack•Austin, TX

3d•$250,000 - $300,000

About The Position

Fluidstack is seeking a Commissioning Mechanical Lead for their Data Centers. The company's mission is to make humanity more free by deploying AI compute infrastructure faster than anyone else. This role is crucial for delivering 10 to 100s of GWs of compute by rethinking every layer of the stack, from acquiring power to designing, building, and operating data centers. The company values extreme ownership, velocity, first principles thinking, and a passion for the AI frontier, often involving long hours at high intensity. The Supply Chain Team is responsible for standing up the commissioning program for 50GW+ of capacity this decade, running commissioning and QA-QC for modular data centers, and automating Level 4 and Level 5 commissioning.

Requirements

A minimum of 10 or more years of hands-on commissioning experience.
Commissioned data center mechanical equipment firsthand: chillers, cooling towers, CRAH/CRAC units, AHUs, CDUs, direct-to-chip liquid cooling, pumps, hydronic piping, and BMS/BAS integration.
Experience running hydronic flushing, cleaning, and pressure and hydrostatic testing on process piping.
Knowledge of AABC/NEBB TAB standards sufficient to identify incorrect test results.
Experience building and executing Testing & Verification programs end to end, from pre-site functional testing through on-site startup, troubleshooting, and support.
Ability to contribute to design and constructability reviews with commissioning and operations in mind, identifying issues early.
Proficiency in maintaining rigorous commissioning records, issue logs, and test reports that can withstand owner or insurer audits.
A degree in Mechanical Engineering.

Nice To Haves

ASHRAE or BCxA commissioning guideline experience.
Controls or electrical systems knowledge.
Hyperscale or mission-critical data center project experience.
Experience managing multiple concurrent project sites.

Responsibilities

Lead mechanical commissioning across flushing, cooling, heat rejection, and liquid cooling systems for high performance data centers, spanning Level 1 through Level 5 commissioning phases.
Drive the Testing & Verification program for mechanical cooling, heat rejection, and data hall thermal systems, working with commissioning agents and engineers from pre-site testing through on-site functional testing.
Own commissioning documentation across multiple projects and sites, tracking issues, test results, and reports with enough rigor to hold up under an owner audit.
Run on-site commissioning operations across general contractors, designers, and vendors: inspections, safety enforcement, progress tracking, and issue resolution.
Close out final operational handover for mechanical systems, confirming every system is ready for service before occupancy.