BMS Controls Engineer

About us

We are a technology powerhouse that designs, engineers, and manufactures the world's most advanced automotive technology and hypercars. Bytes to bolts, Rimac is where everything happens.

Our teams develop and produce both hardware and software solutions for our flagship, record-breaking hypercar, the Nevera, as well as for other automotive manufacturers’ vehicles. Working on technology solutions for partners such as Porsche, Hyundai, Aston Martin, Koenigsegg, Automobili Pininfarina, and others, gives Rimac a unique position of a technology leader in the high-performance electric vehicle industry. The stakes are high.

As a fast-moving company, we nurture a high-performing culture. If you are interested in joining, you must be prepared for relentless learning, adapting, and embracing new technologies. We expect an easy-going person, but also self-driven, entrepreneurial, and highly independent in their work, that will enjoy rising to the challenge and have fun pushing the limits of technology.

Our expectations are high. And we can only achieve our goals with the dedication and collaboration of our exceptional team. Our ambition is to deliver and go the extra mile. We need to expand our already industry-leading team, find the best people, and lead the charge.

We are looking for a skilled and motivated Battery Controls Engineer with expertise in model-based design (MBD) using MATLAB/Simulink and automatic code generation. You will be responsible for developing and deploying embedded control algorithms for battery management systems (BMS) and battery-powered systems across energy storage applications.

This is a hands-on engineering role working at the intersection of control systems, embedded software, and battery technology.

Responsibilities

• Develop control models for embedded hardware, including:
• Battery state (SoC, SoH, SoP, SoE, etc.) estimation
• Thermal management
• Cell balancing
• Voltage and current limits
• Battery protection and diagnostics
• Design, simulate, and validate models in Simulink / Stateflow.
• Generate embedded C code using Simulink Coder / Embedded Coder for deployment on microcontrollers (e.g., Infineon XMC7200, TI C2000, STM32, NXP).
• Support MIL, SIL, and HIL testing workflows for model validation.
• Collaborate with system, hardware, and software teams to integrate control logic into battery systems.
• Ensure traceability from requirements to model and code (ISO 26262 or ASPICE preferred) using Simulink Requirement and Test.
• Debug, analyse, and optimise real-time embedded control performance.
• Maintain and version control models using Git or similar systems.

Requirements

• B.Sc. or higher in Electrical Engineering, Mechatronics, Control Systems, or related field.
• 5+ years of experience with MATLAB/Simulink for control system development.
• Hands-on experience with Simulink code generation for embedded targets (Embedded Coder, Simulink Coder).
• Strong understanding of battery systems and state estimation
• Experience in HIL testing platforms such as dSPACE or Typhoon HIL.
• Working understanding of CAN data networking
• Proficient with Vector tools (Canalyzer, CANape, CANoe)
• Solid foundation in control theory, signal processing, and microcontroller-based embedded systems.
• Ability to be effective in a fast-paced development environment and react to changes
• Excellent verbal and written communication skills
• Excellent problem solving and organisational skills

Considered as an advantage

• Familiarity with UDS diagnostics and battery communication protocols.
• Knowledge of safety-critical software development (e.g., ISO 26262, IEC 61508).
• Skills in scripting (e.g., Python, MATLAB) for test automation.
• Experience with Git, JIRA, Jenkins, or other DevOps tools.
• Basic C/C++ or embedded firmware experience.

What we are like and what we offer

• Working on exciting projects in a high-performance environment pushing the limits, moving science forward while working with the global automotive manufacturers on developing the latest automotive technology.
• Flexible working hours - align with your manager and work on your own schedule.
• Educational budget and internal education programs - at Rimac, we believe in the importance of continuous learning. We provide a range of educational programs and opportunities to support your growth, and we actively encourage you to expand your knowledge and skills. Embrace the chance to learn more and never stop your pursuit of knowledge at Rimac.
• Health-related benefits - taking care of your physical wellbeing is of great importance and all our team members have additional and supplementary health insurance coverage, with an additional budget for yearly general physical examinations and multiple discounts in various privately held clinics.
• Family-oriented perks - we pride ourselves in being a family friendly environment and raising the new generation of STEM oriented brainiacs, so small gestures of love for your loved ones with kindergarten support and various kids’ activities are what we’re all about.
• Pet-friendly workplace - we are always on the lookout for new Pawject Managers! You’ll be able to bring your pet to work, receive a pet necklace and have a professional photoshoot of your pet for its ID card (and lots of discounts for pet shops and clinics).
• Relaxation zones, fresh fruits, and healthy snacks - recharge your batteries with daily fresh fruits and vegetables delivered to your workplace from Croatia’s family-owned business.
• Shopping, travel, and entertainment discounts - as a growing company, we try to negotiate the best conditions and all for your own convenience. Each year we grow our network of partners so you can experience new things and save money.
• Possibility of remote work - even though we love teamwork and try to be more connected to further strengthen our bond between departments and team members, we do want you to feel as comfortable as possible. So, if you want to work in your PJ’s while staying connected, be free do to so when it suits you the most.