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 Senior Thermal Engineer who will help us develop state-of-the-art components such as gearboxes, electric motors, inverters, battery packs, cooling systems, etc. The candidate should offer innovative and forward-thinking solutions and be proactive. The candidate will set up and analyze 0D, 1D, and CFD (Computational Fluid Dynamics) models based on inputs from various departments such as powertrain engineering or battery systems engineering. The ideal candidate should have a strong passion for modeling, technology, and engineering, with a background in mechanical/aerospace engineering or applied physics and 7+ years of experience within the industry.

Responsibilities

• Development of cooling systems and solutions for different components of the electric powertrain such as motors, inverters or batteries
• Performing CFD analysis of internal cooling flows and heat transfer inside components
• Building and developing 1D simulation models at component level, with an emphasis on powertrain and battery thermal and electric models
• Coupling of system level 1D models with CFD component level simulations
• Driving the continuous improvement of methods and optimization tools to improve system efficiency
• Interacting with other departments or suppliers to collect input data for simulation and model building
• Participating in testing for component development
• Providing suggestions and improvements based on simulation and/or experimental data
• Mentoring
• Writing technical documents, preparing presentations, and communicating the results to customers

Requirements

• Excellent knowledge of Fluid Dynamics, Thermodynamics, Heat Transfer
• Excellent understanding of powertrain systems of electric vehicles
• Experience in CFD analysis – flow, heat transfer, multiphase
• Experience with Siemens StarCCM+, Ansys Fluent or OpenFoam
• Experience with GT-Suite or similar software (Dymola, MatLab, Modelon, Amesim)
• Considered as an advantage:
  • Knowledge of Multi-objective optimization
  • Knowledge of ANSA
  • Experience with Reduce Order Modeling
• Commitment to project plans and promised deliverables
• Effective communication and organization skills
• Master’s degree in Mechanical Engineering, Applied Physics, Aerospace or similar field
• 7+ years of experience with 1D and CFD modelling
• Relevant experience in the Automotive or similar industries
• Fluent spoken and written English

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.
• Transportation support – we provide support by covering the costs of local public transportation. Rest assured, we've got you covered when it comes to commuting, ensuring your ease and convenience as a valued member of our team.
• 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.
• Multisport card – being a Rimac employee and a valued team member makes you eligible for Multisport membership with discounted prices for enjoying various sport activities or fitness programs in sporting venues all over Croatia.
• Mental health support – physical and mental wellbeing are our priorities when thinking about our most valuable asset – people. Prioritizing mental health for overall well-being covered by the company is one of the most important steps in having a productive and satisfied community.
• 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, feel free to take remote work day when needed as per your agreement with your manager.

If you are a creative, problem-solving, open-minded, highly-motivated individual and you love a fast-paced environment and are up for the challenge – where were you hiding?