Apply now
Bakgrundsbild jobb
Polarium logo

Polarium Solna Full time

Senior Hardware & Electronics Engineer

About the job

We develop and manufacture turnkey energy storage solutions, based on lithium-ion battery technology. Our goal is to engineer technology that both stores and optimizes energy as we shift towards more efficient energy usage and renewable energy sources on a global scale. You’ll have the opportunity to work with exceptional engineers, scientists, developers and more to pave the way for the next big leap in the energy industry through our battery energy storage and optimization systems.

About the job

We are hiring a Senior Hardware & Electronics Engineer to our skilled R&D department. To build our renewable power solutions we need an expert within hardware design with focus on power converters, switches, BMS power electronics and power distributions. The role also includes participating in pre-studies of new applications and new technologies as well as supporting both internal and external stakeholders with technical expertise. The position is to be based at the Polarium headquarter in Stockholm.


  • HW design in AC/DC, DC/DC, and DC/AC converters.
  • Design power converters in ranges 30V-1kV, 100W-500kW.
  • Design high-power solid-state switches.
  • Develop team tools and methods together with the team.
  • Participate in process improvements and ways of working.
  • Design modularized design blocks with re-use capabilities.
  • Act as mentor and technical lead for power designs.

We see that you are:

We are looking for a highly driven and pro-active person with a passion for hardware engineering, who constantly seeks new knowledge within the area.

You have relevant experience from similar positions, and you have a good understanding of agile development as well as enjoy working in a fast-growing company environment.

Qualifications and experience:

  • Proven track record in power electronics, switching and power conversion.
  • Preferably experience in batteries.
  • Experience from using application specific software.
  • English-speaking skills, both spoken and in writing.
  • Speak and understand Swedish.
  • Relevant higher education.
  • Swedish work permit.

    We offer

    • Bonus system
    • Maximized wellness contribution
    • Five extra flexibility days
    • Pension and health insurance

    Kindly submit your application through the provided apply button in the advertisement on our careers page, as we are unable to accept any applications via email in compliance with the GDPR regulations.

    At Polarium, creating change in the energy industry starts with our team. We believe a diverse workplace brings creativity, innovation and better represents our customers, and the many communities they serve, around the world. A positive work-life balance is what supercharges our teamwork and a sustainable personal journey throughout our careers.

    Since Polarium launched in 2015, we’ve been on a mission to redesign the energy industry. We’re unlocking the massive potential of energy storage systems through our wide range of intelligent and digital services. Our passion for solving challenges is what drives our next generation of premium energy storage products in use on all continents and in all climate zones. Today, we power businesses, optimize energy usage, and reduce carbon dioxide emissions to create a cleaner future in energy.

    We look forward to receiving your application!

    Om företaget
    Building a Sustainable Future Together

    We are a Swedish company dedicated to providing the best-performing, safe, and sustainable energy storage solutions built on lithium-ion technology. Today, our market-leading solutions are in use on all continents and in all climate zones. We ensure that the flow of energy never stops, while enabling our customers to reduce their energy costs and carbon footprint. 

    Do you share our vision for a smart and sustainable future? Join our team!

    Bild #0 - Polarium
    Bild #1 - Polarium
    Bild #2 - Polarium
    Apply now

    You must write in a full name.

    Your email does not appear to be correct. Please correct.

    Your phone number does not appear to be correct. Please correct and use the format 0700-123456.

    Uptrail AB • Korgmakargränd 6, 111 22, Stockholm
    © 2014-2024