FluidStack
Turbomachinery Engineer, R&D
About this role
Fluidstack seeks a Turbomachinery Engineer to lead R&D on centrifugal compressor and expansion turbine design for next-generation data center cooling infrastructure. You'll own aerodynamic design from concept through testing, set machine architecture decisions, and integrate rotordynamics and structural considerations at gigawatt scale.
What you'll do
- Design centrifugal compressor aerodynamics from mean-line analysis through CFD to final impeller, diffuser, and return-channel geometry
- Determine machine architecture including stage count, shaft speed, and diameter while evaluating working fluid tradeoffs
- Design expansion turbine for shaft work recovery integrated with compressor on shared shaft
- Conduct rotordynamics analysis, magnetic bearing integration, and stress analysis at high-speed operating conditions
- Execute prototype testing and close feedback loop from measured performance maps back to aerodynamic design refinement
- Collaborate with structural and mechanical engineers through build and commissioning phases
What they're looking for
- Centrifugal or axial turbomachinery design with built hardware experience
- Mean-line and 1D turbomachine analysis
- CFD modeling and validation for turbomachinery flows
- Rotordynamics and shaft dynamics analysis
- Magnetic bearing and high-speed rotor design
- Thermodynamic cycle architecture and working fluid selection
- Mechanical testing and performance map interpretation
- Cross-functional collaboration with structural and systems engineers
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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 turbomachine you designed that was built and tested—what surprised you when it ran and how did you adapt?
- Describe a rotordynamics challenge you solved on a real shaft. What was the root cause and how did you verify the fix?