Senior Engineer, Supercapacitor Application Software Engineer

Job Summary: This position is responsible for application-layer modeling and algorithm development for supercapacitor energy storage systems (CMS) supporting Peak Shaving and other high dynamic power scenarios. The role will build and validate equivalent circuit/system-level models, develop SOC/SOP/SOH (SOX) algorithms, perform parameter identification and calibration based on test data, and collaborate cross-functionally to support product development and system integration.

This position is sitting in China, serving global product development and business growth for supercapacitor energy storage applications.

Key Job Responsibilities:

• Develop application-layer models for supercapacitor energy storage systems (CMS), including system-level simulation models.
• Build equivalent circuit models (ECM) and dynamic characteristic models; develop parameter models for capacitance, ESR, temperature, and related factors.
• Design, develop, and validate SOX algorithms including SOC (State of Charge), SOP (State of Power), and SOH (State of Health) for supercapacitor applications.
• Implement and improve algorithms such as energy-based SOC estimation, online ESR identification, power boundary calculation, temperature compensation, aging models, and self-discharge compensation.
• Perform parameter extraction and model calibration based on experimental data; conduct online parameter identification (e.g., RLS/EKF/UKF) and analyse aging/consistency issues.
• Support testing and experimental validation; collaborate with cross-functional stakeholders to deliver modeling and algorithm solutions for Peak Shaving applications. Location: Shanghai, CHN Travel: 15% Education/Professional Knowledge
• Bachelor’s degree or above in Electrical Engineering, Automation, Control, Energy Storage, Power Electronics, or related fields.
• 5-8+ years of development experience in energy storage, BMS, or supercapacitor-related systems.
• Familiarity with supercapacitor operating principles, energy storage system architectures, and Peak Shaving or other high-dynamic-power application scenarios.
• Must have: experience with ECM modeling, SOX algorithms, power control, and parameter identification.
• Proficient in MATLAB/Simulink for modeling, simulation, and data analysis.
• Preferred: supercapacitor CMS development experience; AIDC/data center Peak Shaving project experience; online identification with RLS/EKF/UKF; MIL/SIL/HIL experience.
• Strong systems thinking and modeling capability; strong problem analysis and debugging skills; ability to independently drive complex algorithm development; strong cross-team communication skills.

Clarios is the global leader in advanced, low-voltage battery technologies for mobility. We power progress through ever-smarter solutions for virtually every kind of vehicle. With 16,000 employees in over 140 countries, we bring deep expertise to our Aftermarket and OEM partners, and reliability, safety and comfort to everyday lives. We answer to the planet with a rigorous ESG focus - advancing best-in-class sustainability practices and advocating for them across our industry. Learn more about us at www.clarios.com.

Clarios is the creator behind VARTA vehicle batteries, which are designed to deliver the optimal level of power and longevity for every kind of vehicle. Whether you need batteries for your heavy-duty commercial vehicle, your highly equipped car with Start-Stop, or any kind of electric vehicle - VARTA always offers the right technology for every energy demand.

Equal Employment Opportunity:

We recognize that people come with a wealth of experience and talent beyond just the technical requirements of a job. If your experience is close to what you see listed here, please apply. Diversity of experience and skills combined with passion is key to challenging the status quo. Therefore, we encourage people from all backgrounds to apply to our positions. We are an Equal Opportunity Employer and value diversity in our teams in terms of work experience, area of expertise, gender, ethnicity, and all other characteristics protected by laws in the countries where we operate. For more information on our commitment to sustainability, diversity, and equal opportunity, please read our latest report.

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