Junior Physical Safety Engineer

We are looking for a Junior Physical Safety Engineer who wants to be a part of our journey towards becoming the world leading supplier of smart and sustainable lithium battery solutions
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Polarium is a Swedish company dedicated to providing the best performing, safe and sustainable energy storage solutions built on lithium-ion technology. Polarium’s headquarters and R&D center are situated in Sweden and the manufacturing in Mexico. Through its global sales channels and representation in the US, South Africa, Sweden, UK, New Zealand and Indonesia, Polarium serves customers worldwide. Today, our market-leading solutions are in use on all continents and in all climate zones – from the Equator to the Arctic.

About the Opportunity

We are seeking a Junior Physical Safety Engineer, who will be responsible for design, build and test modules or principals which can be included in Polarium’s products or systems. The role includes responsibilities for test facilities. This position is based at the Polarium HQ in Kista. Occasional travel required in Sweden and internationally.



  • Participation and support of research initiatives for physical safety of our products, on a cell- module- and system level;
  • Key participant in research efforts within the physical safety area and in pre-studies of new applications and technologies;
  • Build and test solutions for physical safety;
  • Support certification testing (UL, CSA, ETL etc.);
  • Responsible for documentations and reports.


Are you the one?

We are looking for a self-driven and pro-active person who is keen to learn, is inquisitive and seeks new knowledge within the area. You should have a minimum of 3 years’ experience in similar positions, and demonstrable knowledge with agile development and enjoy fast growing cooperate environment. 

Qualifications and experience:

  • A background in mechanical engineering, combustion engineering, thermodynamics, or other relevant expertise;
  • Experience using application specific software tools;
  • Experience with batteries and ESS systems development;
  • Excellent communication skills;
  • Fluent in English, both spoken and written;
  • Swedish work permit.

What’s in it for you? 

We offer a challenging position at a dynamic and rapidly growing company. We have an open and friendly environment where we help each other to develop and create value. Your work will have purpose and a true impact on Polarium’s future success. We offer a competitive bonus package and a high wellness contribution.


Or, know someone who would be a perfect fit? Let them know!

Stockholm - Kista

Jan Stenbecks Torg 17
164 40 Kista Directions info@polarium.com +46 (0)8 5454 4000 View page

Multi-cultural Workplace with an Entrepreneurial Spirit

We are a fast-growing multicultural company, headquartered in Stockholm, with employees and customers all over the world. Our employees are our number one asset. We have an open and dynamic culture where everybody can make a difference and contribute to the success of the company.  


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