Mechanical Commissioning Engineer, Capacity Delivery

United States · San Francisco, CA · Austin, TX · Remote · New York, NY · Seattle, WAPosted Jul 17, 2026
Mechanical Commissioning Engineer, Capacity Delivery LocationAustin, TX; New York, NY; San Francisco, CA; Seattle, WA; U.S. RemoteEmployment TypeFull timeLocation TypeOn-siteDepartmentDevelopmentCompensation$161K – $203KTo provide greater transparency to candidates, we share base pay ranges for all US-based job postings. Our compensation package includes base salary, equity for all full time roles, benefits, and, for applicable roles, commissions plans.This range reflects a good-faith estimate based on the applicable pay scale, the range previously established for this role, the compensation of individuals currently in equivalent positions, and/or the budgeted amount for the position. Actual compensation may vary based on experience, qualifications, and other factors.We welcome compensation discussions if this range doesn't meet your requirements. Outstanding candidates may be eligible for adjusted terms, plus meaningful equity that ensures you benefit directly from the company's long-term performance.Total compensation may also include equity in the form of restricted stock units. About FluidstackWe exist to make humanity more free. For most of human history, you farmed or you starved. Technology gave people more time for the things they wanted to do, instead of things they had 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. There are groups building AI who don't share these goals. Whoever deploys frontier compute infrastructure fastest will decide whether AI expands human freedom or shrinks it. 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. If that is you, please apply!How We OperateExtreme 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.The Commissioning TeamExamples of key problems the team is working onStand up the commissioning program for 10s to 100s of GWs of capacity this decade.Run commissioning and QA-QC for first-of-a-kind modular data centers.Automate Level 4 and Level 5 commissioning.Role ScopeCommission mechanical systems for gigawatt-scale data centers: chilled water plants, CDUs, liquid loops, and airside systems from Level 2 through Level 5.Write and execute test scripts that prove capacity, redundancy, and failure response, not just that equipment turns on.Run functional and integrated systems tests with controls and electrical so the building performs as one system.Feed test findings back into the standard design so the next site commissions faster.What We're Looking ForThe 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 commissioned mechanical plant on mission critical facilities through integrated systems testing.You've written test procedures from sequences of operation, and found where the sequence was wrong.You read P&IDs and controls drawings fluently.You troubleshoot live systems with vendors watching and a deadline standing behind you.Bonus: Liquid cooling and direct-to-chip systems. CxA credential. Modular data centers. Test and balance oversight.We are committed to pay equity and transparency.Fluidstack is an Equal Employment Opportunity Employer. All qualified...

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