Principal Power Control / SW Engineer - BESS

About the role

Jabil is looking for a Principal Power Control / SW Engineer to lead control software, embedded firmware and system integration for Battery Energy Storage System (BESS) products, including PCS/inverter controls, EMS/BMS interfaces, SCADA integration, protection logic, diagnostics and critical power operating modes. The role works with power electronics, system architecture, battery engineering, test, manufacturing, quality, suppliers and customers 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 control and software activities, define control requirements for charge/discharge, grid-following and grid-forming, reactive power, frequency response, black start, fault ride-through, anti-islanding, safe shutdown and system recovery.
• Develop and review software architecture, state machines, control sequences, communication mapping, alarms, diagnostics, cybersecurity requirements, configuration management and release criteria.
• Set coding expectations: modular design, coding standards, traceability, version control, code review, unit testing, static analysis, integration testing, HIL/SIL validation and release control.
• Integrate BESS software with PCS, BMS, EMS, SCADA, site controllers, meters, protection relays, HVAC, fire safety interfaces and customer or utility control systems.
• Plan and support verification and validation, including requirements-based testing, regression testing, HIL/SIL testing, FAT/SAT, commissioning support, grid compliance testing and field troubleshooting.
• Partner with suppliers, customers and test labs to improve performance, reliability and launch readiness.

Required profile

• Bachelor's degree in Electrical, Control, Computer, Software, Power Electronics, Power Systems, Automation or a related field; Master's or Ph.D. preferred.
• Typically 5+ years of hands-on experience in embedded software, firmware, controls engineering, EMS/SCADA integration, inverter controls, PLC programming, BESS integration or critical power systems.
• Experience in BESS, PCS/inverter controls, UPS, microgrids, renewable energy, solar-plus-storage, EV charging, industrial automation, data center power or utility-scale systems strongly preferred.
• Global team experience, strong English, ability to mentor junior engineers and work in a stage-gate process.

Required skills

• C/C++, Python, IEC 61131-3, MATLAB/Simulink, Git, Jira
• MISRA C awareness, secure coding, functional safety, FMEA/DFMEA, cybersecurity review
• Industrial protocols: CAN, Modbus TCP/RTU, IEC 61850, DNP3, MQTT, OPC UA, Ethernet/IP, RS-485, TCP/IP
• Standards: UL 9540, UL 1741, IEEE 1547, IEC 61850, IEC 62477, IEC 61000, NERC CIP awareness
• Tools: MATLAB/Simulink, PLECS, PSIM, PSCAD, HIL platforms, protocol analyzers

The Principal-level position is eligible for a target annual bonus of 20%.