Power Electronics Engineer - (DATA CENTERS)

MissionHires is seeking a Power Electronics Engineer to join an on-site Advanced Development/Platform R&D team in Fremont, CA. The role focuses on R&D, prototypes, and reference designs for high-power AC/DC conversion (single- and three-phase, kW to MW). You will execute lab bring-up, testing, and iterative improvements; engage U.S. customers on technical evaluations; and own complex escalations beyond typical FAE scope. This position does not include production ramp or sustaining engineering responsibilities.

• Develop and iterate high-power AC/DC prototypes and reference designs (single- and three-phase; kW to MW).
• Plan and execute subsystem investigations: topology comparisons, efficiency improvements, protection strategies, thermal and EMI mitigation.
• Perform hands-on bring-up, characterization, and debug using oscilloscopes, power analyzers, electronic loads, and related lab equipment.
• Analyze test data, document findings, and implement design adjustments to meet performance targets.
• Participate in technical discussions with U.S. customers to gather requirements, explain trade-offs, and recommend approaches.
• Support customer evaluations by preparing test results, addressing design questions, and providing timely technical follow-up.
• Translate customer feedback into actionable engineering tasks and targeted experiments with internal teams.
• Drive structured debug plans for complex escalations, conduct hypothesis testing and root-cause analysis beyond standard FAE processes.
• Coordinate containment actions and resolution options with global R&D partners.
• Share results and best practices with global R&D centers; contribute to common design guidelines.
• Create clear engineering artifacts: test plans, experiment reports, design notes, and concise recommendations.
• Work on-site in Fremont with frequent lab collaboration; support occasional travel for U.S. customer engagements.

• Ph.D. in Electrical Engineering, Power Electronics, Power Conversion/Drives, or related field preferred.
• Strong fundamentals in power electronics with proven hands-on lab capability.
• Experience designing, testing, or debugging high-power converters (AC/DC and/or DC/DC and/or inverter/rectifier).
• Ability to engage customers in technical discussions and communicate clearly in a professional setting.
• Self-motivated, dependable, and collaborative; effective working across time zones and functions.
• Preferred: Experience in renewable/high-power applications (e.g., solar inverters, PCS, EV charging, UPS, industrial power) applicable to MW-class systems.
• Preferred: Familiarity with high-power semiconductors (IGBT/MOSFET/SiC/GaN), gate drives, sensing, and protection schemes.
• Preferred: Practical understanding of EMI/EMC fundamentals and mitigation in high-power switching systems.
• Preferred: Experience with simulation/modeling tools (SPICE, MATLAB/Simulink, PLECS).
• Preferred: DSP/MCU digital control experience (not required).
• Must be on-site in Fremont, CA; frequent lab work and in-person collaboration; occasional travel as needed.

20% Bonus