Power Electronics Engineer
About The Position
Fluidstack’s Product Engineering team builds power and cooling systems for gigawatt-scale AI data centers. The SST group is designing solid-state transformers as a core building block of that power architecture. The Power Electronics Engineer will design the solid-state transformer (SST) cell and block, including converter implementation, component selection, magnetics interface, and loss and thermal budgets for a 5 MW block on a medium-voltage DC bus. The engineer will simulate, build, and bring up initial cell prototypes alongside PCB, firmware, and test engineers, then debug them at full voltage and power. The role turns architecture decisions into buildable designs, including schematics, design calculations, and technical sections of the SST specification. It also involves evaluating vendor hardware and data against independent models and providing technical evidence for make, co-develop, or buy decisions. The engineer will carry designs through cell, block, and pilot-unit reviews, resolving loss, thermal, and insulation issues before subsequent builds.
Requirements
- Hands-on experience developing and validating high-power or medium-voltage power converters at the lab bench, beyond writing technical requirements.
- Experience engineering isolated DC-DC converters using 1.7 kV or higher SiC devices and rigorously justifying efficiency calculations.
- Experience guiding conversion systems from initial simulation models through hardware bring-up and full qualification testing.
- Experience collaborating across PCB, controls, and magnetics domains to balance architectural trade-offs.
- Experience identifying hardware bugs during bench evaluation and resolving them in subsequent board iterations.
Nice To Haves
- Experience with solid-state transformer products.
- Experience with resonant converter topologies such as DAB, LLC, or CLLC.
- Circuit simulation experience.
- Knowledge of SiC voltage derating.
- Knowledge of power conversion safety standards.
Responsibilities
- Design the SST cell and block, including converter implementation, component selection, magnetics interface, and loss and thermal budgets for a 5 MW block on a medium-voltage DC bus.
- Simulate, build, and bring up initial cell prototypes with PCB, firmware, and test engineers, and debug them at full voltage and power.
- Translate architecture decisions into buildable designs, including schematics, design calculations, and technical sections of the SST specification.
- Evaluate vendor hardware and data against independent models and provide technical evidence for make, co-develop, or buy decisions.
- Carry designs through cell, block, and pilot-unit design reviews, resolving loss, thermal, and insulation issues before the next build.
Stand Out From the Crowd
Upload your resume and get instant feedback on how well it matches this job.
What This Job Offers
Job Type
Full-time
Education Level
No Education Listed
