1. Participate in product roadmap planning and project definition for energy storage systems. Analyze system requirements, assess technical risks, develop product specifications and system solutions, define key performance indicators such as system efficiency, usable capacity, losses, and battery degradation, and allocate system requirements across Cell, EMS, PCS, and BMS teams.

2. Coordinate cross-functional development across EMS, PCS, BMS, fire protection, thermal, electrical, and other engineering teams to ensure product functionality and key performance targets align with the common system platform.

3. Lead system solution development and system architecture design, and review control, communication, electrical, and fire protection designs.

4. Participate in technical definition and acceptance reviews for in-house Cell, EMS, PCS, and BMS products, and evaluate third-party products for system integration.

5. Participate in system-level functional and performance validation.

6. Establish and continuously improve the IPD process for energy storage system development, defining review criteria across requirements analysis, product definition, solution design, engineering development, product validation, and production release.

7. Break down system technical requirements, identify development risks, and lead the resolution of critical technical challenges.

8. Provide technical solutions to customer-facing teams and support technical discussions and tender responses for major energy storage projects.

1. Master’s degree or above in Electrical Engineering, Automation, Mechanical Engineering, Thermal Engineering, Electrochemistry, Mechatronics, or a related field. At least 5 years of experience in energy storage system development with a master’s degree, or 2 years with a PhD.

2. Solid understanding of energy storage systems and key components, including PCS, BMS, EMS, communication systems, and lithium-ion batteries.

3. In-depth knowledge of C&I and utility-scale energy storage applications. Familiarity with system architecture, battery characteristics, and the selection and design of battery clusters, PCS, and transformers. At least 2 years of experience in energy storage system design.

4. Familiarity with applicable design standards and regulations, including IEC, UL, and relevant national standards.

5. Strong organizational, cross-functional collaboration, and communication skills.

6. Strong analytical and problem-solving skills with experience in root cause analysis and issue resolution.

7. Experience providing technical support for pre-sales activities.

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1. Perform structural simulation and optimization for energy storage battery packs under lifting, transportation vibration, drop, crush, and cell expansion loading conditions.

2. Perform structural simulation and optimization for C&I energy storage systems under lifting, forklift handling, transportation vibration, wind, snow, and seismic loading conditions.

3. Perform structural simulation and optimization for energy storage containers under lifting, transportation vibration, wind, snow, seismic, NFPA 68 explosion venting, and classification society certification load cases.

4. Investigate and resolve structural issues identified during mechanical testing of energy storage systems.

5. Support structural design engineers in product design and structural optimization.

6. Interpret and apply structural strength standards for energy storage systems.

7. Develop and maintain simulation standards and material databases, and provide technical support to customer-facing teams on structural strength-related topics.

1. Bachelor’s degree or above in Mechanical Engineering or a related field.

2. At least 3 years of structural simulation experience in the energy storage industry.

3. Solid knowledge of structural simulation methodologies and relevant design standards for energy storage systems, with the ability to independently perform structural analysis and optimization.

4. Proficient in HyperMesh or ANSA for pre-processing, and structural simulation tools such as OptiStruct, Abaqus, or LS-DYNA.

5. Familiarity with welding processes and material forming technologies used in energy storage structures.

6. Strong teamwork and communication skills.

7. Experience with structural optimization methods, including topology, shape, and size optimization, is preferred.

8. Experience in simulation tool customization or automation development is preferred.

ESSRecruitment@jinkoess.com

1. Develop embedded software for energy storage PCS, including core control algorithms, HMI, and external communication.

2. Perform software requirements analysis, architecture design, coding, functional and performance testing, software validation, and technical documentation.

3. Commission product prototypes and investigate, troubleshoot, and resolve complex technical issues during product development and field deployment.

4. Manage software version control and software releases.

5. Collaborate with system engineers on competitive benchmarking and product definition.

6. Collaborate with system control engineers on the development and validation of advanced control algorithms.

7. Collaborate with hardware engineers on power device gate driver design.

8. Support PCS testing, certification, and product validation with hardware and test engineering teams.

1. Relevant degree in power electronics and drives, control engineering, computer science, electronic information, power systems, mechatronics or a related discipline. Previous project experience will be the primary consideration.

2. Senior/Principal roles: at least three years' development experience with energy storage PCS products; residential PCS experience is advantageous; master's degree or above.

   Engineer roles: recent graduates with a bachelor's degree or above may be considered; graduates from leading universities are preferred.

3. Strong foundations in power electronics, control theory and power systems.

4. Good coding standards, technical documentation, communication and presentation skills.

5. Expert knowledge of PCS pre-charge, charge/discharge control, grid-connected control, stability control and protection for DSP-focused roles.

6. Strong embedded software development skills on DSP, ARM and/or FPGA/CPLD platforms; DSP and ARM capability are key requirements, although not necessarily in the same candidate.

7. Knowledge of converter topologies and control strategies including buck-boost, two-level full bridge, LLC, T-type/I-type three-level, HERIC and H5; the first two are essential for DSP-focused roles.

8. Knowledge of signal conditioning, PWM/SVPWM, single- and three-phase PLLs, and LC/LCL filters; not mandatory for ARM-focused roles.

9. Strong understanding of PCS communications with BMS, EMS and user interfaces.

10. Familiarity with RS485, CAN, Ethernet and USB, and protocols such as Modbus TCP.

11. Knowledge of processor peripherals and interfaces including ADC, DAC, SPI, UART and EMIF.

12. Familiarity with offline simulation tools such as MATLAB, Saber and PSCAD and with hardware-in-the-loop simulation.

13. Familiarity with peripheral, control-loop and power-stage hardware circuits.

14. Awareness of domestic and international energy storage product standards and grid codes.

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1. Design and develop PCS control circuits, including signal sampling/conditioning, DSP/ARM-based embedded hardware (FPGA/CPLD) and communications interfaces.

2. Define PCB solutions and layouts for PCS power circuits, including board-mounted power stages and gate-drive circuits for discrete IGBTs/MOSFETs, working with structural engineers for residential products.

3. Design, manage, standardise and maintain PCS schematic and PCB footprint libraries.

4. Conduct requirements analysis, architecture design, functional/performance test-case development, self-testing and documentation.

5. Work with system strategy, software and hardware teams to identify root causes and resolve complex field issues.

6. Support control-system architecture design and product iteration with system engineers.

7. Work with hardware engineers on the selection of board-mounted components.

8. Work with software engineers to implement and commission control strategies.

9. Work with test and hardware engineers to complete PCS testing and certification.

1. Relevant degree in power electronics and drives, electronic information, mechatronics, computer science, power systems, control engineering or a related discipline. Previous project experience will be the primary consideration.

2. Senior/Principal roles: at least three years' PCS product development experience. Experience in digital, mixed-signal, high-current and high-power PCB layout is preferred; residential PCS experience is advantageous; bachelor's degree or above.

   Engineer roles: recent graduates with a bachelor's degree or above may be considered; graduates from leading universities are preferred.

3. Strong foundations in power electronics and mechanical design, with an understanding of power-system fundamentals.

4. Expert knowledge of digital and analogue electronics and circuit design, including signal conditioning and RS485/CAN/Ethernet/USB interfaces and common communications protocols.

5. Embedded hardware development experience on DSP, ARM and/or FPGA/CPLD platforms; DSP and ARM capability are key requirements, although not necessarily in the same candidate.

6. Proficiency in at least one schematic and PCB layout tool such as Cadence, Altium Designer, CAM or Mentor.

7. Strong knowledge of PCB layout standards, EMC/EMI design, PCB thermal design and thermal analysis.

8. Good knowledge of common electronic components and their supply chains.

9. Understanding of PCB and PCBA manufacturing processes.

10. Experience with circuit-simulation tools such as MATLAB, PSIM and Multisim.

11. Familiarity with gate-drive principles for discrete IGBTs and MOSFETs.

12. Familiarity with C/C++.

13. Understanding of converter topologies including buck-boost, two-level full bridge, LLC, T-type/I-type three-level, HERIC and H5.

ESSRecruitment@jinkoess.com

1. Lead converter control-algorithm and software-architecture development, with a strong understanding of converter electrical principles and control-platform hardware.

2. Build energy storage PCS simulation models and develop control algorithms using DSP and Simulink.

3. Simulate, validate and define PCS control strategies and algorithms.

4. Develop key technologies for parallel PCS operation, including carrier synchronisation, droop control, circulating-current suppression and grid-side control.

5. Develop voltage-source control strategies, including virtual synchronous machine and off-grid operation, weak-grid operation, resonance suppression and grid-oscillation mitigation.

6. Lead root-cause analysis and solution development for complex issues during development and in the field.

7. Apply real-time/HIL simulation and modelling tools such as ADPSS and PSCAD, and relevant energy storage power-station modelling standards.

8. Experience developing software for wind converters, PV inverters, variable-frequency drives or SVG systems is advantageous.

1. Relevant degree in power electronics and drives, control engineering, power systems, electronic information, computer science, mechatronics or a related discipline. Previous project experience will be the primary consideration.

2. At least five years' embedded software development experience, including energy storage converters, PV inverters or wind converters. Recent master's or PhD graduates may be considered for engineer roles; graduates from leading universities are preferred.

3. Strong foundations in power electronics, control theory and power systems.

4. Expert knowledge of PCS pre-charge, charge/discharge control, grid-connected control, stability control and protection.

5. Strong knowledge of PWM/SVPWM, single- and three-phase PLLs, LC/LCL filters, associated control strategies and component characteristics.

6. Ability to build system transfer-function models, perform control-theory-based stability analysis, and design and optimise stabilising control for LC/LCL filters.

7. Proficiency with MATLAB, Saber, PSCAD and similar offline simulation tools. Experience with model-based design and automatic code generation is preferred; C/C++ and HIL simulation experience are advantageous.

ESSRecruitment@jinkoess.com

1. Develop Battery Management System (BMS) software for energy storage systems.

2. Define software unit requirements, develop software architecture and detailed design specifications, and perform model-based development (MBD) with MIL/SIL testing.

3. Participate in software solution design and control strategy reviews.

4. Collaborate with software test, software integration, and system engineers to optimize software functions and develop test plans.

1. Bachelor’s degree or above in Computer Science, Electrical Engineering, Automation, Software Engineering, or a related field.

2. At least 3 years of experience in embedded software development. Experience in the energy storage industry is preferred; automotive industry experience is also considered.

3. Familiarity with the V-model software development lifecycle and software design standards.

4. Proficient in MATLAB/Simulink/Stateflow for model-based development. Experience with Linux application development is preferred.

5. Experience with data logging and analysis tools, including Vector CANoe, CANape, CANalyzer, INCA, TSMaster, and ZLG. Familiarity with TCP/IP, Ethernet (RJ45), and RS485 communication is preferred.

6. Experience developing software for ARM-based platforms. Familiarity with I2C, SPI, CAN, Modbus, and Ethernet interfaces is preferred. Proficient in C/C++; experience with MATLAB scripting and Python is an advantage.

 Experience with NXP S32 or Infineon AURIX TC3xx production projects is preferred.

7. Familiarity with JTAG debuggers (e.g., Lauterbach, J-Link), compilers (TASKING, Green Hills, GCC), and development environments such as Visual Studio is preferred.

 Experience using oscilloscopes, logic analyzers, and other hardware/software debugging tools is preferred.

ESSRecruitment@jinkoess.com

Lead the application software architecture, algorithm development, software testing and project delivery of EMS solutions for renewable energy and energy storage:

1. Design and develop the application software architecture, core algorithms, testing, and project delivery for renewable energy and energy storage EMS solutions.

2. Develop and optimize application software architecture, energy management algorithms, and benchmark solutions for EMS and Local EMS.

3. Define functional requirements and develop control strategies for core EMS and Local EMS algorithms.

Develop application software, perform software modeling and unit testing, deliver software components (SWCs), and resolve software defects.

4. Define software design standards and prepare development deliverables throughout the in-house EMS and Local EMS software development lifecycle.

5. Analyze application software requirements for energy storage projects and develop scalable, platform-based software solutions.

6. Develop, test, validate, and deliver EMS application software for energy storage products.

1. Bachelor’s degree or above in Computer Science, Renewable Energy, Power Electronics, Control Engineering, Software Engineering, or a related field.

2. At least 3 years of software development experience. Experience with energy storage system control logic and communication, EMS/SCADA, or AGC/AVC dispatch systems is preferred.

3. Proficient in C/C++ development on embedded Linux. Experience with MATLAB is an advantage.

4. Experience with Qt, multithreading, socket programming, MySQL, SQLite, RS485, and network communications. Familiarity with Modbus, MQTT, IEC 60870-5-103/104, and IEC 61850 (GOOSE/MMS) protocols.

5. Strong communication and collaboration skills, with solid analytical abilities, a strong sense of ownership, and a commitment to continuous learning.

ESSRecruitment@jinkoess.com

1. Design mechanical structures for energy storage system electrical enclosures, including battery cabinets, power distribution cabinets, and communication cabinets, covering component layout, cable routing, and engineering drawings.

2. Design containerized energy storage system enclosures, including thermal management, fire protection, environmental monitoring, grounding systems, equipment layout, battery rack installation, lifting, thermal insulation, and corrosion protection.

3. Prepare product documentation, including structural BOMs, technical specifications, and related engineering documents.

4. Provide technical support during manufacturing and assembly, and participate in prototyping, testing, and production ramp-up.

5. Continuously improve product designs by optimizing design solutions, materials, component standardization, and overall cost.

1. Bachelor’s degree or above in Mechanical Engineering or a related field.

2. At least 5 years of experience in mechanical design, with a solid understanding of the product development process and the ability to independently complete product design.

3. At least 3 years of experience designing medium- to large-scale electrical enclosure systems. Familiarity with sheet metal fabrication, injection molding, die casting, and welding processes.

4. Proficient in Creo (Pro/ENGINEER), AutoCAD, or equivalent CAD software.

5. Familiar with the design requirements of lithium-ion energy storage systems and applicable electrical safety standards.

6. Experience in structural design or thermal design for liquid-cooled systems is preferred.

ESSRecruitment@jinkoess.com

1. Participate in product roadmap planning and project initiation for energy storage systems. Analyze system electrical requirements, assess technical risks, and develop electrical system design proposals.

2. Design the DC and AC electrical systems for energy storage products, including electrical schematics, wiring diagrams, system BOMs, and related technical documentation. Complete high- and low-voltage circuit design, electrical component selection, and design validation.

3. Select, develop, and validate key electrical components, including CCS, high-voltage boxes, sensors, circuit breakers, surge protection devices, and cables. Prepare component specifications and ensure compliance with system performance and safety requirements.

4. Provide technical support for system installation, commissioning, and maintenance. Analyze and resolve on-site electrical issues.

5. Provide technical support to manufacturing, testing, and after-sales teams, troubleshoot electrical issues, and support product validation and continuous improvement.

6. Research advanced technologies related to electrical safety and high-voltage systems for energy storage applications. Track emerging technologies and evaluate their suitability for future products.

7. Prepare technical documentation, including user manuals, test specifications, manufacturing requirements, system design documents, and technical reports to support product development and project delivery.

1. Bachelor’s degree or above in Electrical Engineering, Automation, Mechatronics, or a related field. At least 3 years of relevant experience with a bachelor’s degree, or 2 years with a master’s degree.

2. Familiarity with energy storage systems and key components, including PCS, BMS, EMS, communication systems, and lithium-ion batteries.

3. Familiarity with commercial & industrial (C&I) and utility-scale energy storage applications. Solid understanding of energy storage system architecture, battery characteristics, and PCS and transformer selection.

4. Familiarity with electrical design standards and regulations, including IEC, UL, and applicable national standards.

5. Strong cross-functional communication and collaboration skills.

6. Strong problem-solving skills with experience in root cause analysis and issue resolution.

7. Ability to independently develop electrical system solutions, select electrical components, and prepare primary and secondary electrical designs.

8. Proficient in AutoCAD, EPLAN, and electrical system simulation tools such as ETAP.

9. Experience in electrical control cabinet design, energy storage system installation and commissioning, and electrical wiring practices is preferred.

ESSRecruitment@jinkoess.com