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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Operations Engineer, Mechanical - Data Center Operations Organization - **Company:** Fluidstack Ltd - **Location:** United States - **Salary:** $150,000.0 - $250,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Data Centers, AI Infrastructure, Computer Network Operations - **Published:** August 5, 2026 - **Apply:** https://www.careerbuilder.com/job-details/principal-operations-engineer-mechanical-data-center-operations--f5780a2c-a89e-4469-a9a9-085f67bf1bc2 ## About the Role Aircraft Piloting, Artificial Intelligence (AI), Collocation, Commissioning, Construction, Dental Insurance, Manufacturing, Mechanical Engineering, Network Operations Center, Operational Audit, Pumps, Retirement Plan, Risk, Root Cause Analysis, Site Evaluation, Training/Teaching, Vehicle Fleets, Vision Plan, Writing Skills ## Description * 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. The Data Center Operations Team Examples of key problems the team is working on * Operate at the scale of a nation, not a building. Accelerating toward 100 GW by the end of the decade, roughly the entire electricity consumption of Japan. You wont just run a data center; youll run infrastructure the size of a G7. * Fly the plane while its being built. Running flawless operations inside a live construction zone, adapting in real time and turning the pace of build-out into our advantage. You will redefine operational excellence. * Write the playbook, dont inherit it. Most operators step into someone elses system. Here you build one, leaving your fingerprints on how the whole company runs. As we scale 100x, youll set the standards, shape the operating model, and grow the team by the thousands. Role Scope * Serve as the most senior technical authority for operational mechanical and cooling infrastructure across the hyperscale AI data center fleet. * Lead site assessments and operational audits, and drive team technical readiness ahead of site activation. * Review designs and specifications from an operational lens, and feed operational learnings back into design and manufacturing as the build model becomes productized. * Be the senior voice on chillers, cooling towers, CDUs, and the liquid-cooling architectures AI infrastructure depends on. * Own mechanical operational readiness and the commissioning-to-operations handover for new sites. * Author and approve high-risk mechanical MOPs, EOPs, and AOPs, and lead root cause analysis on significant cooling events. What Were Looking For The below is a starting point. We always make space for exceptional people, so if you dont fit this role exactly, tell us where you would. * Youve spent a career on critical mechanical systems and you treat thermal precision as non-negotiable for AI workloads. * You command chilled water, chillers, cooling towers, CRAH/CRAC, pumps, CDUs, and direct liquid cooling in live environments. * Youve authored and executed high-risk mechanical MOPs and led root cause analysis on significant cooling events. * You assess operational readiness at any site, audit the posture, and raise the standard. * You teach and build the mechanical readiness of teams ahead of activation. * Bonus: Hyperscale or large colocation at hundreds of MW. Direct liquid cooling and CDU operations. ASHRAE TC 9.9. Chilled water plant optimization. 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