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Oxfordshire UK, GBR

Mechanical Integration Engineer - ESS Enclosure Design


About us


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


At Rimac Technology, we are on a mission to accelerate the pace of decarbonization across various industries through our cutting-edge electrification solutions. By launching Rimac Energy and introducing next-generation stationary Energy Storage Systems (ESS). we are at the front line of this effort with the aim of facilitating the transition towards a more sustainable planet.


Join Rimac Energy and work with a global team that is passionate for solving complex problems, pushing boundaries, and challenging the status quo. You can make a real impact to our business and push your career to the next level; together we can change the way we power the planet for good.


At Rimac Energy we are currently seeking a Mechanical Integration Engineer to work closely with a team of multi-disciplinary experts to develop battery and power electronics concepts for new programs. A key aspect of the role will be working on the development of enclosures for utility scale energy storage systems. The main responsibilities are creating design concepts and initial 3D models and then working closely with suppliers and the Mechanical development team to bring the solutions into fruition. This will further extend to managing and delivering to system and components level requirements, optimisation of design through iteration with our simulation team, and managing test programs to validate the technology. An important further aspect to the role is to contribute as a systems engineer, where you have responsibilities to deliver aspects such as DFMEA, DVP, requirements documentation, and BOM management.


Rimac believes in giving engineers a platform to develop innovative and world class solutions that contribute towards a net zero future. In this role, you will play a crucial part in achieving our objective to create tangible social and environmental impact.




The specific job responsibilities will depend upon the active project and may include but are not limited to:

  • Working on the development of the enclosures for energy storage systems for utility scale markets.
  • Developing design solutions from a clean sheet – including initial 3D models
  • Working closely with the Mechanical Development engineers to further develop and produce the components
  • Component verification plans and testing methods
  • Technical communication with suppliers and other internal stakeholders
  • Exploring novel battery and power electronics solutions
  • Lead initiatives to do environmental and social good, and integrate this into actionable projects, company policies and culture
  • Visit national and international trade fairs to present, observe market trends and represent our company




  • Masters in Engineering (Mechanical or electrical).
  • 2 years+ of experience in EV or energy industry, and/or other related engineering backgrounds
  • You are passionate about electrification and de-carbonization
  • You seek to improve our future by bringing cutting-the-edge technology to market
  • You have prior knowledge of CAD software (preferably CATIA)
  • You are a strong communicator, both verbally and in written form
  • You can lead, inspire, and motivate a team exploring new business ventures
  • Willing to travel domestically and internationally, as required.


Considered as an advantage


  • You have prior experience of ESS systems
  • You have prior experience of sealing technologies and/or sheet metal part design
  • You continuously create ideas and seek opportunities beyond the obvious
  • You make things happen with pragmatism and a can-do attitude
  • You have experience with system testing and verification
  • You are familiar with the latest battery technology and capable of technical innovation
  • You are proficient in the use of Excel and PowerPoint, and capable of crafting convincing analyses and representative presentations


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.
  • Stock options – as a Rimac employee, you will have the opportunity to participate in our company's success through stock options. By becoming an owner of Rimac options (shares), you can actively contribute to the growth and value of the company. Let's embark on this journey together and enjoy the benefits of shared success at Rimac.
  • 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.
  • Psychological counseling – 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, 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.