Software Engineer - Functional Programming at Klarna
Stockholm, SE
Who we are
Klarna’s mission is to free people from all the meaningless time spent managing money and purchases, so they can do more of what they love. Every day at Klarna we help consumers, merchants, and partners to explore just how smoooth the modern purchase experience can be. Our position at the crossroads of payments, consumer financing, ecommerce and banking means we are uniquely positioned to do this. There is no label for what we do. 
Klarna was born in Stockholm in 2005 and today has 2000 employees working across Europe and the US. We currently serve 60 million consumers, work together with 90,000 merchants and process more than a million payment transactions a day. We are growing at 40% year on year and our investors include Visa, Atomico, Sequoia Capital, Permira and Bestseller group/ Anders Holsch Povlsen. We have strong partnerships with some of the world’s leading brands, such as ASOS, IKEA, Adidas, Zara, Lufthansa and Spotify. 
To find out more about what it's like to work at Klarna:
Ever wondered why banking is so customer unfriendly? The UX is a nightmare, modern features with quick logins and integrations seem non-existent. Feature rollouts take months and that’s just not smoooth.
At Klarna we aim to fix that. We want to create a banking offer that is both a pleasure to use as a consumer and one that you as a developer can use for your Fintech startup. Starting a new bank? Use our platform. Want to launch your own credit card? Use our platform. We do all the heavy lifting for you, providing a secure and compliant set of APIs which allow developers to focus on adding value through building their own financial products and services
By being based on a modern architecture in the cloud, utilizing tools such as Erlang, Haskell, Clojure and Scala combined with a serverless architecture -- we will deliver on that expectation.
We're expanding several of our financial platform engineering teams; We're always adding functionality into our payment processing systems and products and we're in the process of building a modern banking platform.
What you’ll get to do
- Own your services end to end. Decide how best to build, test, deploy and monitor.
- Work with large scale, highly available and resilient modern financial systems.
- Be an integral part of a team, in addition to its culture and ways of working. Common practices include agile methodologies, pair and mob programming.
- Work with automated deployment enabling code release multiple times a day.
- Succeed, fail, and learn together with other talented people. We believe in an environment that provides an opportunity for growth and see education as an outcome of failure that gets us closer to the next breakthrough.
- Work with modern tools and languages that excite you.
You'll get the chance to work with
Functional programming languages including Erlang, Scala (typelevel stack) and JVM tooling. We are also utilising Clojure, PureScript, and Haskell.*
Mnesia, and a range of OTP tools.
Kafka, Serverless, PostgreSQL, DynamoDB, LevelDB.
Prometheus, Splunk, Ansible, Terraform, Jenkins, Docker, Kubernetes.
* Previous functional programming experience isn’t essential, but you should be open to learning and working with any of the following languages as the choices available may change over time.
What we offer
Culture - You'll have an opportunity to work with people from 45 different countries in our English speaking office in Stockholm city centre.
Learning - We have a learning and development focused environment with an emphasis on knowledge sharing, training, and regular internal technical talks.
Compensation - You’ll get an attractive salary, pension, and insurance plans, along with 30 days annual leave. We recognise that life is more than work, and offer benefits for gym memberships, marathons, and all sorts of activities that promote physical health. We also have generous parental leave (for men and women).
Relocation - We can offer full relocation support to Stockholm for senior candidates. Remote work is not something we can accomodate.
We know that diverse teams are strong teams, and welcome those with alternative identities, backgrounds, and experiences. Our team includes women, men, mothers, fathers, the self-taught, the college-educated, and people from all over the world.
We also believe in making contributions back to the open source community. You can find some of our work at
Interested in finding out more?
Send over a CV or LinkedIn profile in English.
We can offer you an international working environment filled with smart and ambitious colleagues. We know that diverse teams are strong teams, so we welcome those from different backgrounds and experiences. As part of one of Europe’s fastest growing companies, you'll help play an important role in taking Klarna to the next level.