Backend Developer



Smart and Sustainable Energy Storage

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 and Vietnam. 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 job

We are looking for Backend Developer to join our newly formed Digital Engineering Team. This means becoming part of a small, dynamic and fast paced team. As a backend developer in our team you will get the opportunity to work with a high impact project within the energy field. The code you implement will be released to hardware and clients throughout the world in a continuous and agile manner.

The Digital Team are responsible for our connected platform, building solutions for energy optimization, asset management, anti-theft, field service and more.

We work with a modern technology stack running in AWS that includes Kubernetes, PostgreSQL, RabbitMQ, IoT Core, Terraform, GitLab and more

The position is based at the Polarium HQ in Kista, with remote work possibilities.


  • Develop backend systems and API´s for our platform
  • Developing modularized design blocks with re-use capabilities
  • Build solutions with quality, security, availability and scalability in mind
  • Participate in pre-studies of new projects, technologies and product areas
  • Support internal and external stakeholders with expertise within the area

Who are you?

  • You are passionate and pragmatic with a genuine technical interest
  • You are detail oriented but with the ability to see the whole picture.
  • You have a minimum of 3 years’ experience from similar positions
  • Knowledge from agile development and enjoy fast growing cooperate environment.
  • You are a team player.

Qualifications and experience:

  • Strong backend skillset using python or similar
  • Experience in developing services in the cloud, preferably AWS.
  • Know how to use git and workflows common with GitLab
  • Experience using RabbitMq or similar
  • Master or bachelor´s degree in relevant education
  • Excellent communication skills, fluent in English, both spoken and written

Bonus if you have

  • Experience using IaC tools like terraform, terragrunt, ansible or similar
  • Experience using AWS IoT or similar

What’s in it for you?

We offer a challenging position in an open and friendly environment where we help each other to develop and create value. Your work will have a true impact on Polariums future success.

To apply for this job email your details to