Principal Operations Engineer, Mechanical

Fluidstack builds and operates civilization-scale compute infrastructure and data centers for frontier AI. The Principal Operations Engineer, Mechanical will serve as the senior technical authority for mechanical and cooling systems, leading site assessments, operational readiness, design reviews, commissioning handovers, high-risk procedures, and root cause analysis across the data center fleet.

Responsibilities:

• 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

Requirements:

• You've 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
• You've 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
• Uptime Institute