Power Electronics Engineer (PhD Required) – High Power AC/DC (kW–MW) | On-site Fremont | H-1B Transfer & TN Visa

Location: Fremont (On-site only)Employment Type: Full-timeTeam: Advanced Development / Platform R&D (High Power)Role SummaryWe are hiring a Power Electronics Engineer to support advanced development and platform-level R&D for high-power AC/DC power conversion systems spanning single-phase and three-phase solutions from several kW up to MW-class.This role is based onsite in Fremont and includes frequent interaction with U.S. customers to understand application needs, support technical evaluations, and provide engineering input to R&D priorities. You will also support complex customer escalations requiring design-level troubleshooting beyond standard Field Application Engineering (FAE) processes.Note: This role is focused on R&D, prototyping, and reference design work. It does not include production ramp, manufacturing support, or sustaining engineering.What You’ll Do (Responsibilities)Prototype & Advanced Development (No Production Ownership)Support development of high-power AC/DC prototypes and reference designs (single-phase and three-phase; kW to MW) through circuit evaluation, lab testing, and iterative improvementsExecute technical investigations including topology comparisons, efficiency optimization, protection methods, and thermal/EMI mitigationPerform hands-on bring-up, characterization, and debugging using lab equipment (oscilloscopes, power analyzers, electronic loads, etc.)Analyze test data, document findings, and implement design adjustments to meet performance targetsCustomer Engagement & Technical Support (U.S.-based customers)Participate in technical discussions to understand customer requirements and constraintsCommunicate trade-offs and recommend engineering solutions clearlySupport customer evaluations with test data, design insights, and technical follow-upTranslate customer feedback into actionable engineering tasksEscalation Support (Beyond FAE)Lead structured debug efforts for complex or ambiguous technical issuesPerform root cause analysis and hypothesis-driven troubleshootingCollaborate with global R&D teams to develop containment and resolution strategiesGlobal CollaborationWork with global engineering teams to share results and standardize best practicesProduce high-quality engineering documentation including test plans, reports, and design recommendationsMinimum Qualifications (NON-NEGOTIABLE)Ph.D. in Electrical Engineering, Power Electronics, Power Conversion, or closely related field (REQUIRED)Strong foundation in power electronics with hands-on lab experienceExperience designing, testing, or debugging high-power converters (AC/DC, DC/DC, inverters, rectifiers)Ability to engage in technical discussions with customersSelf-motivated, collaborative, and able to work across global teamsPreferred Qualifications (Nice to Have)Experience in high-power applications (renewables, EV charging, UPS, industrial power systems, PCS)Familiarity with IGBT, MOSFET, SiC, or GaN technologiesUnderstanding of EMI/EMC mitigation in high-power systemsExperience with simulation tools (SPICE, MATLAB/Simulink, PLECS)DSP/MCU-based digital control experienceWork EnvironmentOn-site in Fremont with hands-on lab workFrequent collaboration with U.S.-based customersOccasional travel may be requiredWork Authorization / Sponsorship (GLOBAL CANDIDATES ENCOURAGED)U.S. Citizens and Green Card holders are encouraged to applyH-1B visa transfer candidates are supportedTN visa candidates (Canada/Mexico) are supportedCandidates currently authorized to work in the U.S. (including OPT/STEM OPT) are encouraged to applyNew H-1B sponsorship is not available at this timeEqual Opportunity EmployerWe are an Equal Opportunity Employer and value diversity at our company.