# Mechanical Lead, Capacity Delivery

**Company:** [Fluidstack](https://hotfix.jobs/companies/fluidstack)
**Location:** Austin, TX
**Role:** Hardware Engineering
**Salary:** $215 – $302k
**Experience:** 7+ years
**Skills:** mechanical engineering, liquid cooling, hydraulics, cfd modeling, data center design, direct-to-chip cooling, pe license
**Posted:** 2026-07-17

> Lead mechanical engineering for Fluidstack's gigawatt-scale AI data centers, owning reference design, field decisions, and execution for direct-to-chip liquid cooling systems from concept to energized. Requires prior leadership of data center or heavy industrial mechanical programs with deep liquid cooling expertise.

## Job Description

## Role Scope
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.

## Responsibilities
- Engineer gigawatts from drawing to energized, in months not years.
- Own technical execution across every build: the drawings, the field questions, and the engineering calls that keep multiple concurrent gigawatt sites moving.
- Engineer data centers that go up in months, not years. At that pace rework is not an option: problems get caught on paper or they cost a data hall.
- Design it once, build it a hundred times. Every site's lessons roll into the reference design on the way to 50GW+, so each build starts ahead of the last.

## Requirements
- Led mechanical engineering for data center or heavy industrial programs.
- Know liquid cooling at the design level: hydraulics, controls interface, redundancy.
- Made field engineering calls under schedule pressure that held up.
- Manage design firms with technical authority, not just contract terms.

## Nice-to-Haves
- PE license.
- Direct-to-chip cooling.
- Modular skid packages.
- Hydraulic and CFD modeling.

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**Canonical:** https://hotfix.jobs/jobs/7ce6e8e7-d33a-45b8-9e79-7db708dd4a0c