At Jabil (NYSE: JBL) we are proud to be a trusted partner for the worlds 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 Jabils 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

• Bachelors degree in Electrical Engineering Power Electronics Power Systems Energy Systems or a related technical field is required.
• Masters 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 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.

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