Lead Mechanical Engineer, Data Center Cooling

Fluidstack; Austin (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

Fluidstack is building civilization-scale infrastructure for AI. We are seeking a lead mechanical engineer for R&D focusing on cooling, piping, and modular unit systems.

You will own reference designs, enforce standards, and review vendor packages to scale the megawatt capability. You will mentor teammates, balance innovation with schedules, and help grow a high-performance team in a fast-paced environment.

Qualifications

• Led mechanical design for data centers, power plants, or heavy industrial systems.
• Released mechanical packages that were built at scale.
• Personally checks calculations and catches errors juniors miss.
• Qualified major mechanical equipment with vendors.
• Balance innovation with shipping schedules.

Responsibilities

• Lead mechanical engineering for R&D: cooling, piping, and mechanical plant for modular units and behind-the-meter systems.
• Own the mechanical reference designs: released, revision-controlled, and defensible to the megawatt.
• Set the technical bar: calcs checked, standards enforced, and vendor packages reviewed for real.
• Grow the team: hire, mentor, and delegate while carrying the hardest problems.

Skills

Mechanical design

Data center systems

Vendor qualification

Calcs review

Mentoring teams

Job description

Fluidstack is building civilization-scale infrastructure for AI. We are seeking a lead mechanical engineer for R&D focusing on cooling, piping, and modular unit systems.

You will own reference designs, enforce standards, and review vendor packages to scale the megawatt capability. You will mentor teammates, balance innovation with schedules, and help grow a high-performance team in a fast-paced environment.