Structural Engineer, R&D

Fluidstack•Austin, TX

38d•$210,000 - $260,000

About The Position

Fluidstack is seeking a Structural Engineer for its R&D team. The company's mission is to make humanity more free by developing AI infrastructure. They are focused on delivering 10 to 100s of GWs of compute faster than anyone else, which involves acquiring power, designing and building data centers, and operating them. The R&D team is working on critical problems such as rejecting over 10 gigawatts of heat, designing and building custom machines (compressors and chillers) because the market cannot supply at the required rate, and owning all thermofluids problems for the fleet, including working fluid and cycle architecture, large-scale heat exchangers, two-phase heat transfer at the chip level, and thermal energy storage. The role involves owning the structural analysis of machines, designing pressure-containing structures, running rotordynamic and modal analyses, designing containment cases for energetic failures, and designing test cell structures and fixturing.

Requirements

Have taken a pressure-containing design from calculation through to a fabricated article, and it held.
Have run FEA on rotating hardware and correlated it against strain gauge, spin-pit or test data rather than trusting the model.
Have owned a containment or burst case and made the argument for why it holds to people whose safety depended on it.
Have worked the modal and critical-speed problem jointly with whoever designed the aerodynamics, early enough to change both.
Have signed off a structure that got built, and you were there when it was first loaded.

Nice To Haves

Flight and propulsion structures (spin pit testing, burst margin, containment).
Rotordynamics and bearing dynamics.
High-cycle fatigue and fracture on rotating hardware.
Pressure vessel and containment design.
Professional Engineer license.

Responsibilities

Own the structural analysis of the machine: impeller and rotor stress, casing and pressure containment, and the load paths through the packaged unit.
Design the pressure-containing structures, and carry them from first calculation to hardware people are willing to stand next to.
Run the rotordynamic and modal work alongside the turbomachinery engineer, covering critical speeds, whirl and the magnetic bearing interface.
Design the containment case, so an energetic failure at speed stays inside the machine.
Design the test cell structures and fixturing that carry the article, the drive and the loop under load.