Principal Power Electronics HW Engineer - BESS

About the role

Jabil is looking for a Principal Power Electronics Hardware Engineer to lead power electronics design, integration and validation for Battery Energy Storage System (BESS) products, including PCS/inverters, DC/DC converters, auxiliary power, protection interfaces, high-voltage DC distribution and related power conversion subsystems. The role works with system architects, suppliers, thermal, mechanical, test, manufacturing, quality, certification and customer teams to deliver BESS platforms for commercial, industrial, utility-scale, microgrid and critical power applications. The position is based at Jabil's Huangpu office in Guangzhou.

Key responsibilities

• Lead BESS power electronics engineering, including PCS/inverter integration, DC/DC conversion, auxiliary power, HVDC distribution and protection interfaces.
• Define electrical requirements for PCS, BMS/EMS interfaces, switchgear, transformers, meters, protection devices, grounding and site-level power interfaces.
• Review power electronics designs, including semiconductors, gate drives, magnetics, DC-link capacitors, sensing, protection circuits, EMI/EMC, thermal constraints and high-voltage safety.
• Evaluate PCS/inverter performance, efficiency, power rating, charge/discharge capability, reactive power, derating, protection coordination and grid compliance.
• Develop specifications, interface requirements, validation expectations, design review checklists, reliability requirements and release readiness criteria.
• Support simulation and validation of converter performance, losses, efficiency, harmonics, thermal loading, power quality and reliability.
• Partner with suppliers, test labs, customers and cross-functional teams to improve performance, manufacturability, cost, reliability and launch readiness.
• Prepare and present technical specifications, design reviews, test reports, risk assessments, root-cause analyses and recommendations.

Required profile

• Bachelor's degree in Electrical Engineering, Power Electronics, Power Systems, Energy Systems or a related field; Master's or Ph.D. preferred.
• P05 / Principal Engineer level: typically 8+ years of relevant experience with technical leadership on complex power electronics, PCS, critical power, electrical integration, supplier qualification or BESS programs.
• Experience working in a global team, strong English communication, and ability to mentor less experienced engineers.
• Stage-gate project management (PLCM) and multi-project management; professional certifications or advanced training are a plus.

Required skills

• Power electronics topologies and power-stage design (IGBT, SiC MOSFET, gate drivers, magnetics, EMI/EMC, thermal constraints).
• BESS architecture (battery racks, BMS, PCS, EMS, SCADA, transformers, switchgear, grid interconnection).
• Simulation tools such as PLECS, PSIM, LTspice, PSpice, MATLAB, ETAP, DIgSILENT, Altium or OrCAD.
• Grid codes, power quality, harmonics, grounding, protection coordination, fault ride-through and anti-islanding.
• Familiarity with standards such as UL 9540, UL 1741, UL 1973, NFPA 855, IEC 62477, IEC 61000, IEEE 1547 and NEC.
• Single-line diagrams, schematics, wiring diagrams, interface control documents and protection settings.