Senior Software Engineer

Lifesum Stockholm



Lifesum gives people personalized navigation for health and lifestyle improvement. By tapping in to mobile sensor technology and combining it with passion for design and applied psychology, we try to create delightful user experience that improves peoples lives.

Job Description

Lifesum is looking for a Senior Software Engineer to join their backend team.

You would be joining a small but experienced team that is responsible for the APIs that the mobile clients consume. We strive to write well-tested code that scales to the needs of our growing user base, and ultimately helps people to live healthier and happier lives. Join our extraordinary team and help build the future of Lifesum!

”Help people around the world to live a happier and healthier life”

Lifesums stack

We are migrating towards a service based architecture, breaking up their Django monolith into smaller pieces to make them more flexible and maintainable. They are cloud hosted on AWS, running their Python and Go apps in containers against Amazon provided services.

Their services are primarily APIs which are consumed by mobile clients, asynchronous tasks running longer operations, and occasionally web-facing UIs. Lifesum’s philosophy is to choose the right tool for every job, giving us flexibility in the way we work.


Your responsibilities will be to work in cross-functional teams, to help design and deliver new user experiences. We want you to help and mentor others when needed and technically contribute to the overall design of our infrastructure. You will be responsible for developing and maintaining services that drive our mobile and web clients, also with connecting with our partners by integrating 3rd party APIs.

What we expect from you

  • Open, honest and collaborative worker
  • 3+ years of experience and confidence in architecture
  • Fluent in Python, Go or a related language
  • A passion for lean, clean and maintainable code
  • A high level of curiosity
  • The desire to grow and to share learnings with others
  • Fluent in English (written and verbal) 

Helpful knowledge would be an understanding of network protocols and experience with production environments running on Linux. Other helpful experiences would be working with docker, AWS, terraform or dev ops generally, but also with databases, relational and/or document based. 

What you can expect from Lifesum

There’s a few things about Lifesum that aren’t exactly the norm:

  • Passion. All companies might claim this, but Lifesummers show real passion and dedication to their work. Our blame-free culture encourages experimentation, which helps us all learn and grow.
  • Trust. We work with a little less formal structure than you might expect from other companies. This means more freedom to suggest, champion and set direction, but more responsibility to communicate well and get others on board. It works because we trust each other to work in the company’s best interest.
  • Diversity. Our team comes from over 20 countries, and bring with them a rich mix of backgrounds, worldviews and working styles. We rely on these different perspectives to make sure we’re solving the right problems.
  • Balance. We strive to maintain a good work-life balance, enabling people with families to feel at home here, as well as making the stress level manageable. If you are interested in exercising, we have group runs in good weather and the gym next door.

If you think this sounds exciting, we’d love to hear from you. Send us your resume right away and please tell us why you are interested in this particular position and why Lifesum is the place you want to be.

About Lifesum

Founded in 2013, Lifesum is a Stockholm-based tech startup with a vision to make it simple for people everywhere to form habits that build towards healthier, happier lives.

Lifesum is an equal opportunity employer and value diversity at our company. They do not discriminate on the basis of sex, transgender identity or expression, ethnicity, religion or other belief, disability, sexual orientation, or age.

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