Senior Applications Engineer
$130,000–$160,000 year
On-siteScotts Valley, California, United States
Job Summary
Own application-specific testing of Heron's solid state transformer (SST) across core use cases including powering AI data centers, utility-scale BESS, and PV plants. Bring up hardware in lab and pilot sites, write scripts to drive test equipment and converters, and debug performance against application demands. Support end-to-end testing of a novel high C-rate battery pack (SuperBBU) and validate ripple mitigation, backup capability, and power-loss profiles. Assist in integration testing at pilot sites covering EMS-to-SST communication, black start, grid-forming coordination, and round-trip efficiency. Write and maintain Python-based test automation to command power converters, sequence tests, and log data. Safely operate power converters, chillers, and protection hardware while setting up cabling and instrumentation for high-power runs.
Required Qualifications
- 5+ years of hands-on experience in power electronics, energy storage, EV, grid, or a comparable hardware-intensive environment
- Strong grasp on DC circuit fundamentals: resonances, parasitics, slew rates, and inductive spikes
- Strong scripting and test-automation skills to drive instruments and power converters and to log and analyze data
- Working knowledge of power conversion and battery systems: inverters and converters, BMS, DC pre-charge, contactors and protection, and thermal and cooling loops
- Comfort with lab instrumentation (oscilloscopes, power analyzers, DAQ systems) and comms protocols such as CAN and Modbus TCP
- Scrappy mindset: you get things done with a hundred hurdles in front of you
Desired Qualifications
- Experience with solid state transformers or grid-forming inverters
- Familiarity with utility-scale BESS commissioning, grid-support functions, or EMS integration
- Prior experience in systems-level testing of power electronics or energy storage products
- Hands-on experience with circuit and system simulation tools such as LTspice, Simscape, or PLECS
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