Principal Power Electronics HW Engineer

At Jabil (NYSE: JBL), we are proud to be a trusted partner for the world's top brands, offering comprehensive engineering, supply chain, and manufacturing solutions. With 60 years of experience across industries and a vast network of over 100 sites worldwide, Jabil combines global reach with local expertise to deliver both scalable and customized solutions. Our commitment extends beyond business success as we strive to build sustainable processes that minimize environmental impact and foster vibrant and diverse communities around the globe. Principle Power Electronics HW Engineer Build your career with Jabil! We challenge and empower you to make the most of your talents while working with outstanding colleagues from diverse backgrounds who share your drive and passion to make Jabil grow! Job Summary The lead power electronics HW engineer will 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. This role will translate system requirements into robust hardware architecture, electrical interface requirements, supplier specifications, and validation plans to support safe, reliable, efficient, and compliant BESS operation. The engineer will work closely with system architects, suppliers, thermal, mechanical, test, manufacturing, quality, certification, and customer teams to deliver high-performance BESS platforms for commercial, industrial, utility-scale, microgrid, and critical power applications. Location: This role will be based at Jabil's Huangpu office in Guangzhou, Guangdong Province, China. Essential Duties and Responsibilities Lead BESS power electronics engineering activities, including PCS/inverter integration, DC/DC conversion, auxiliary power, high-voltage DC distribution, protection interfaces, and critical power architecture. Define electrical requirements for PCS, BMS/EMS interfaces, switchgear, transformers, meters, protection devices, grounding, and site-level power interfaces. Review power electronics designs, including semiconductor selection, gate drives, magnetics, DC-link capacitors, sensing, protection circuits, EMI/EMC, thermal constraints, and high-voltage safety. Evaluate PCS/inverter performance, including efficiency, power rating, charge/discharge capability, reactive power capability, derating behavior, protection coordination, and grid compliance needs. Develop specifications, interface requirements, validation expectations, design review checklists, reliability requirements, and release readiness criteria. Support modeling, simulation, and validation activities for converter performance, losses, efficiency, harmonics, thermal loading, power quality, reliability, and field issue resolution. Partner with suppliers, test labs, customers, and cross-functional teams to improve PCS/BESS performance, manufacturability, cost, reliability, and launch readiness. Prepare and present technical specifications, design reviews, test reports, risk assessments, root-cause analyses, and recommendations to stakeholders and leadership. May perform other duties and responsibilities as assigned. Job qualifications Technical knowledge & skills Strong understanding of power electronics topologies and critical power conversion technologies, including AC/DC, DC/DC, DC/AC converters, PCS/inverters, bidirectional converters, auxiliary power supplies, and high-voltage DC systems for BESS applications. Deep knowledge of power-stage design, including IGBT, SiC MOSFET, gate drivers, snubbers, DC-link capacitors, magnetics, sensing, isolation, protection circuits, EMI/EMC, thermal constraints, and high-voltage safety. Strong understanding of BESS architecture, including battery racks, BMS, PCS, EMS, SCADA, transformers, switchgear, protection devices, metering, site controllers, and grid interconnection interfaces. Know how to define and validate PCS/inverter requirements, including power rating, voltage/current limits, efficiency, thermal derating, fault handling, protection coordination, alarms, diagnostics, telemetry, and safe shutdown behavior. Solid experiences with power electronics simulation and analysis tools such as PLECS, PSIM, LTspice, PSpice, MATLAB, ETAP, DIgSILENT, Altium, OrCAD, or equivalent platforms. Familiar with grid codes, power quality, harmonics, grounding, protection coordination, fault ride-through, anti-islanding, reactive power, frequency response, and critical power system behavior. Working knowledge of BESS and electrical safety standards, including UL 9540, UL 1741, UL 1973 awareness, NFPA 855 awareness, IEC 62477, IEC 61000, IEEE 1547, NEC awareness, and regional grid interconnection requirements. Ability to interpret and develop single-line diagrams, power-line diagrams, schematics, wiring diagrams, interface control documents, protection settings, test procedures, technical specifications, and engineering documentation. Switchgear design is a plus. Non-Technical Knowledge & Skills Worked as part of a global team. Strong English communication skills, with the ability to communicate effectively across global teams. Build trusted relationships and effectively influence others and share best practices. Assess a project and articulate risk while developing project milestones. Develop projects in a stage-gate process (PLCM). Ability to manage multiple projects and priorities, meet commitments, and communicate risks, assumptions, and dependencies proactively. Ability to adapt quickly to changing customer, technical, and business requirements while effectively managing complexity and ambiguity. Demonstrates ownership and accountability in overcoming challenges and delivering results under pressure. Mentor less experienced engineers. Education & Experience Requirements Bachelor’s degree in Electrical Engineering, Power Electronics, Power Systems, Energy Systems, or a related technical field is required. Master’s degree or Ph.D. in a relevant engineering discipline is preferred, especially with emphasis in power electronics, grid-connected converters, power systems, critical power, or energy storage systems. P04 / Lead Engineer level: typically requires 5+ years of hands-on experience in power electronics design, PCS/inverter engineering, converter validation, BESS integration, grid-connected systems, critical power systems, or related engineering roles. P05 / Principal Engineer level: typically requires 8+ years of relevant experience with demonstrated technical leadership on complex power electronics, PCS, critical power, electrical integration, supplier qualification, or BESS platform programs. Professional certification, advanced power electronics training, grid code experience, electrical safety training, Six Sigma, DFSS, NAFEMS, or equivalent technical credentials are a plus. Jabil, including its subsidiaries, is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, genetic information, veteran status, or any other characteristic protected by law. Accessibility Accommodation If you are a qualified individual with a disability, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access site as a result of your disability. You can request a reasonable accommodation by sending an e-mail to or calling 727-803-7988 with the nature of your request and contact information. Please do not direct any other general employment related questions to this e-mail or phone number. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to. 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Jabil, including its subsidiaries, is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, genetic information, veteran status, or any other characteristic protected by law. Accessibility Accommodation If you are a qualified individual with a disability, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access site as a result of your disability. You can request a reasonable accommodation by sending an e-mail to with the nature of your request and contact information. Please do not direct any other general employment related questions to this e-mail. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to. #whereyoubelong