FluidStack
Mechanical Engineer, R&D
Austin, TX$203k–$232kfulltimemidAdded today
About this role
Fluidstack seeks a Mechanical Engineer to design and optimize cooling distribution systems for modular AI data center units. You'll own thermal calculations, hydraulic sizing, equipment selection, and validation against real-world test data in a fast-paced infrastructure startup.
What you'll do
- Design mechanical cooling systems including piping, distribution, and heat rejection for modular data center units
- Perform independent hydraulic and thermal calculations for equipment sizing and system performance
- Specify, evaluate, and integrate cooling equipment such as CDUs, pumps, and dry coolers
- Create and maintain accurate P&ID drawings for cooling system designs
- Support prototype builds and commissioning by reconciling test data against design predictions
- Drive end-to-end ownership of mechanical systems from concept through deployment
What they're looking for
- Mechanical or HVAC systems design for data centers or industrial facilities
- Hydraulic calculations and fluid dynamics
- Thermal analysis and heat transfer modeling
- CAD and P&ID documentation (Revit or plant CAD preferred)
- Cooling equipment specification and vendor integration
- Design validation and commissioning
- ASHRAE data center standards knowledge (bonus)
- Liquid or direct-to-chip cooling experience (bonus)
Opens the official application on the employer’s site. No login required.
FluidStack
FluidStack builds AI infrastructure at scale, developing data centers and warehouse operations designed to handle gigawatt-capacity compute deployment. The company is hiring for warehouse engineers, data center operations specialists, product engineers, and people leaders to support rapid infrastructure expansion across multiple sites.
- Website
- fluidstack.io
Likely interview questions
- Walk us through a cooling system design you owned end-to-end—how did your calculations compare to actual performance data?
- Describe your experience performing hydraulic and thermal calculations independently. What tools do you use and how do you validate your work?