Lead Mechanical Engineer

About the Company

Fluidstack is focused on delivering civilization-scale compute infrastructure for AI. We acquire power, design and build data centers, and operate them, rethinking every layer of the stack to deploy frontier compute infrastructure at unprecedented speed and scale.

Responsibilities

• Lead end-to-end deployment and commissioning of mechanical and cooling systems across concurrent sites
• Own operational reliability of cooling infrastructure across the live fleet, diagnosing thermal performance issues
• Build and maintain mechanical commissioning standards, acceptance test procedures, and runbooks for cooling systems
• Serve as the on-site technical authority through equipment startup, performance validation, and load testing
• Set and enforce mechanical reliability standards across the portfolio, including preventive maintenance and redundancy validation

Requirements

• Bachelor's degree in Mechanical Engineering or a related field
• Experience owning field deployment and commissioning of mechanical systems in data centers or high-density mission-critical facilities
• Experience commissioning and troubleshooting cooling systems such as chilled water, CDUs, or direct liquid cooling
• Proven ability to build commissioning standards and maintenance runbooks at a portfolio level
• Experience diagnosing and resolving mechanical failures and thermal performance issues under time pressure
• Ability to travel to deployment and operations sites up to 50% of the time

Preferred Qualifications

• Professional Engineer (PE) license
• Direct-to-chip or liquid cooling operational experience at AI-class rack densities
• Experience leading a mechanical commissioning or reliability program across multiple concurrent sites
• Familiarity with CMMS platforms, predictive maintenance tools, and thermal monitoring systems
• Proficiency in CFD tools like 6SigmaET or Icepak