[Remote] Principal Operations Engineer, Mechanical

Note: The job is a remote job and is open to candidates in USA. Fluidstack builds and operates large-scale compute infrastructure and data centers for artificial intelligence. The Principal Operations Engineer, Mechanical will serve as the senior technical authority for mechanical and cooling infrastructure, leading operational assessments, readiness, design reviews, commissioning handovers, and incident 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

Skills

• 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

Benefits

• Competitive total compensation package including equity
• Retirement or pension plan, in line with local norms
• Health, dental, and vision insurance
• Generous PTO policy, in line with local norms
• Equity in the form of restricted stock units
• Remote work

Company Overview

Fluidstack provides cloud infrastructure for AI with GPU clusters, orchestration, and monitoring for intensive workloads. It was founded in 2017, and is headquartered in New York, New York, USA, with a workforce of 51-200 employees. Its website is https://www.fluidstack.io.

Company H1B Sponsorship

Fluidstack has a track record of offering H1B sponsorships, with 8 in 2026, 1 in 2025, 2 in 2024. Please note that this does not guarantee sponsorship for this specific role.