Battery Performance Engineer

Battery Performance Engineer

Rimac Automobili

Zagreb, Croatia

At Rimac Energy we are currently seeking an experienced battery performance engineer to join our team. In this role, you will play a crucial part in achieving our objective to create tangible social and environmental impact. As a battery performance engineer, you will work closely with a team of multi-disciplinary experts to design and develop battery systems with greater performance, optimized lifetime, and enhanced safety.


  • Cell Definition – Work with internal teams, and cell suppliers to choose the ideal cell for each program, ensuring the right balance of performance attributes, cost and risk are provided.  
  • Develop and execute battery safety and performance test plans, including design of experiments, test equipment selection and setup, and data acquisition.
  • Greater Performance Extraction – Utilise models and experimentation to maximise the available energy, power, and charge capability without compromising safety and/or reliability. Assist with degradation assessments and work to optimise lifetime
  • Performance Prediction - Utilise models and experimentation to provide key inputs about cell performance, heat generation and degradation to other team members.
  • Safety – Work with internal teams to ensure that key safety metrics are satisfied.
  • Validation & Verification - Work with internal teams to ensure appropriate levels of validation and verification and conducted to demonstrate that the system level requirements can be met
  • Develop and maintain test equipment, including design, procurement, and calibration.
  • Develop advanced battery cell/module/pack model and control algorithms to improve and estimate battery performance
  • Represent the company as a technical expert for ongoing project delivery and engage with stakeholders at all levels of the organization.


  • An engineering qualification (Bachelor’s or master’s degree in a STEM subject or equivalent) and relevant industry/academic experience.
  • Knowledge on battery technologies
  • Strong experience with battery safety and performance testing equipment and data acquisition systems.
  • Proficiency in data analysis tools, such as Matlab, Python
  • Experience in developing electrochemical and/or thermal models for batteries.
  • Strong communication skills and ability to work collaboratively with cross-functional teams.
  • Knowledge of battery safety standards and regulations.

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