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About the Role
Fluidstack is seeking an individual to own the electrical design of a machine's power path, including the DC bus, inverter, motor drive, and amplifiers for magnetic bearings. This role involves specifying and integrating a drive for a high-speed hermetic motor, designing the power and protection scheme for test benches and load banks, and ensuring electrical safety in the test cell.
Responsibilities
- Own the electrical design of the machine’s power path: the DC bus, the inverter, the motor drive, and the amplifiers driving the magnetic bearings around the rotor.
- Specify and integrate the drive for a high-speed hermetic motor, including the switching, thermal, bearing-current and insulation questions that follow from running a machine fast.
- Design the power and protection scheme for the test benches and the load bank, so a machine can be run to full rating and its output absorbed or regenerated.
- Take the electrical scope through EMC, harmonics and arc flash to an installation that is safe to work on and safe to sign off.
- Own electrical safety in the test cell, including the procedures the technicians and test engineers work to around live buses and stored energy.
Requirements
- Designed a high-power converter or motor drive that got built, and were present the first time it drove a real load.
- Integrated a drive with a motor somebody else designed, and dealt with the drive's impact on the machine and shared bus.
- Chased an EMC, harmonic or bearing-current problem to its actual cause.
- Written electrical safe work practices and enforced them.
- Powered up a test cell or a first-of-a-kind installation, and determined it was safe to close the breaker.
Skills
- High-speed and magnetic-bearing drive systems
- Electric propulsion and aerospace power systems (eVTOL, satellite EPS, electric pump-fed engines)
- 800 V class DC architectures
- Wide-bandgap devices (SiC, GaN)
- Test cell power
- Safe practice around energized work (test benches, load banks, regenerative drives)
About the Company
- Fluidstack exists to make humanity more free by delivering compute infrastructure for AI faster than anyone else.
- We are singularly focused on delivering 10 to 100s of GWs of compute, rethinking every layer of the stack.
- We acquire power, design and build data centers, and operate them.
- Speed and scale are our key differentiators.
- We are building civilization-scale infrastructure for AI.
- We hire people who care deeply about this problem space.
- Our operations are characterized by autonomy, extreme urgency, first-principles reasoning, passion for the problem, and a focus on building something that matters.
Equal Opportunity
- Fluidstack is an Equal Employment Opportunity Employer.
- All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law.
- Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.