Lead Mechanical Engineer, Data Center Design

Lead Mechanical Engineer, Data Center Design LocationAustin, TX; New York, NY; San Francisco, CAEmployment TypeFull timeLocation TypeOn-siteDepartmentDevelopmentCompensation$250K – $300K • Offers EquityTo 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 Data Center Design TeamExamples of key problems the team is working on:Lead the design, development, and execution of 10s to 100s of GWs of data centers this decade.Drive the next generation of liquid cooling and electrical distribution systems.Develop and scale first-of-a-kind modular data centers.Influence behind-the-meter designs and planning for multi-GW campuses.Role ScopeDefine and own Fluidstack's mechanical cooling strategy across the portfolio, from chip-level thermal interfaces through CDU and coolant distribution, chilled water plants, and heat rejection.Own the mechanical basis of design, master specs, standard drawings, and sequences of operation for every cooling system.Drive the architectural calls: coolant chemistry, chiller topology (air-cooled vs. water-cooled centrifugal), CDU elimination, medium-voltage chiller integration, and free cooling for best-in-class PUE and WUE.Define modular, prefabricated mechanical assemblies (containment cooling units, chiller skids, pump packages, piping modules) built for rapid deployment with minimal field interfaces.Own mechanical design delivery across multiple concurrent programs from concept through IFC, enforcing quality at each milestone and coordinating external MEP consultants.Build and manage the mechanical engineering team, and hold chiller, pump, and coolant vendors accountable on lead time, quality, and performance.What We're Looking ForThe below is a starting point. We always make space for exceptional...