Lead Mechanical Engineer - Data Center Capacity Delivery

Fluidstack; Seattle (WA); On-site; USD 237,000 - 300,000; Full time

Benefits offered by this job

PE license

Job summary

Fluidstack is building civilization-scale infrastructure for AI, owning mechanical engineering across data centers from design to energized builds. This role focuses on direct-to-chip liquid cooling, hydraulics, and fast-paced field decisions to maintain trajectory of gigawatt-scale deployments.

We seek exceptional engineers with data center experience who can drive design choices under tight schedules and coordinate with external design firms to deliver scalable, repeatable solutions.

Qualifications

• Led mechanical engineering for data center or heavy industrial programs.
• Knowledge of liquid cooling at the design level: hydraulics, controls interface, redundancy.
• Made field engineering calls under schedule pressure that held up.
• Managed design firms with technical authority, not just contract terms.
• Bonus: Direct-to-chip cooling, modular skid packages, CFD modeling.

Responsibilities

• Own mechanical engineering across the portfolio: cooling plants, liquid loops, and airside from reference design to energized.
• Set the mechanical reference design for direct-to-chip liquid cooling and evolve it with each build's lessons.
• Make the field mechanical calls, routing conflicts, equipment substitutions, sequence changes, at build speed.
• Review consultant packages with owner-of-record rigor before they hit the field.

Skills

Mechanical engineering

Data center experience

Liquid cooling design

Field engineering under pressure

Tools

CFD modeling

Hydraulics design

Job description

Fluidstack is building civilization-scale infrastructure for AI, owning mechanical engineering across data centers from design to energized builds. This role focuses on direct-to-chip liquid cooling, hydraulics, and fast-paced field decisions to maintain trajectory of gigawatt-scale deployments.

We seek exceptional engineers with data center experience who can drive design choices under tight schedules and coordinate with external design firms to deliver scalable, repeatable solutions.