The Product Engineering TeamProduct Engineering builds the power and cooling systems that let Fluidstack deliver gigawatt-scale AI data centers faster and denser than the grid-standard supply chain allows. The SST group is designing solid-state transformers as a core building block of that power architecture.
Examples of key problems the team is working on- Architect a medium-voltage solid-state transformer that can be manufactured, serviced, and scaled across gigawatt-scale campuses, not just demonstrated in a lab.
- Define the interface between the SST and the MVDC distribution system, including protection, control boundaries, and fault behavior.
- Build a semiconductor and magnetics supply strategy that survives a thin 10kV SiC market over a multi-year horizon.
- Take converter hardware from topology selection through working prototypes on a schedule that data center construction actually depends on.
Role Scope- Write the control firmware for every SST cell and block: modulation, closed-loop voltage and current control, and voltage sharing across dozens of series-stacked cells.
- Build the fast protection path that detects a fault and shuts the converter down within microseconds, from sensing to safe state.
- Sequence startup, precharge, cell bypass, and the reconfiguration of the output from 800 V to 1,500 V.
- Connect cell controllers to the block master and the site control system across isolation barriers, with telemetry operators can act on.
- Prove the firmware on hardware-in-the-loop rigs before it runs on a high-voltage prototype.
What We're Looking ForThe below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly, tell us where you would.- You've written control firmware that runs a power converter at full power, and debugged it on the bench with a scope in hand.
- You've controlled resonant or dual active bridge converters, or balanced series-connected cells.
- You've built protection logic in an FPGA or DSP that trips in microseconds and fails safe.
- You've used hardware-in-the-loop or model-based design to catch bugs before they reached hardware.
- You keep firmware in version control with reviews and automated tests, and can show the release history of something you shipped.
- Bonus: Embedded targets for power control (TI C2000, Xilinx or Intel FPGAs). Model-based design (MATLAB/Simulink, PLECS). Hardware-in-the-loop platforms (Typhoon HIL, OPAL-RT). Industrial communication (CAN, EtherCAT, fiber links). Functional safety practice (IEC 61508, MISRA C).
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