Junior Mechanical Engineer

at SOLiTHOR’s Centre of Excellence for all-solid-state rechargeable lithium battery technology.


Who we are

SOLiTHOR is a high-tech company which is utilising 10 years of research by imec, the prestigious Belgian R&D institute in nanoelectronics and digital technologies.

Building on this unique and patented technology, SOLiTHOR aims to develop and commercialise the next all-solid-state lithium batteries for the electromobility sector. Our mission is to scale up our all-solid-state battery technology and apply it to electric vehicles – in the air, on land and sea.

To strengthen our growing team of engineers and technologists, we are looking for a motivated and talented Mechanical Engineer.


Main responsibilities

  • Design modules from concept to validation
  • Develop 3D mechanical models of single cells
  • Analyse the module architecture to accommodate the unique stack pressure, swelling behaviour and thermal behaviour of SSB cells with the possibility of extending to battery packs
  • Manage and create battery components CAD files to meet the component and system level targets
  • Collaborate with the BMS Engineer to guide the development of technical specifications and engineering designs of the BMS
  • Support the engineering tools development to provide trade-off studies between packaging efficiency, thermal, noise vibration and harshness before and/or during design phases
  • Work with the Cell Testing Engineer to develop quality documents for production (DFMEA, PFMEA, Control Plans, Engineering Specification)
  • Determine root causes and solve failures and production issues


Skills, personality and experience

We are looking for an entrepreneurial individual who has a hands-on approach to work - a creative problem solver who is motivated and passionate about the profession and is keen to work in a start-up environment.



  • 3+ years of product design experience
  • BSc degree in Mechanical Engineering (or relevant experience)
  • Hands-on experience in designing high-volume assembly and battery cells/modules/packs
  • Familiar with CAD software and assembly drawings
  • Excellent understanding of mechanical structures, and the electrical and thermal analysis of a battery system, especially for high-voltage and high-power applications
  • Knowledge of BMS technology and hardware test & validation for battery systems is advantageous
  • Fluent in English


Other considerations

  • Results-driven and able to deliver quality output within tight deadlines
  • Able to thrive in a high-tech start-up environment where teamwork is key
  • Strong analytical mind and the ability to troubleshoot chemical and technical issues
  • Strong communication skills
  • Flexible and able to respond to rapidly changing (technological/technical) circumstances
  • Based in Belgium or willing to relocate


The opportunity

We offer you the opportunity to develop the next generation all-solid-state lithium batteries in a challenging environment. In doing so, you will take on a crucial role within our talented, passionate and multicultural team. You will be given the opportunity to help build a company that will have a major global social impact.

SOLiTHOR not only offers you access to top class equipment and laboratory facilities, but also a competitive salary package with the following benefits:

  • Contract of indeterminate duration (40h/week, 12 additional holidays)
  • Meal vouchers worth €8/working day
  • Hospitalisation insurance
  • Group insurance
  • Home office compensation
  • Stock options



You will be based in Sint-Truiden, where you will be surrounded by like-minded, inspiring people.

Interested to join our promising and challenging start-up?

To apply please send your CV to our HR officer Asho Brouckaert and include the job title in the subject line.

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