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Senior Software Engineer - JavaScript


Stockholm, SE

  • Job Type: Full-Time
  • Function: Engineering Software
  • Industry: Future Finance
  • Post Date: 05/21/2024
  • Website:
  • Company Address: Sveavägen 46 , Stockholm, SE, 113 43

About Klarna

We make shopping smoooth. Our aim is to become the world’s favorite way to shop and bring flexible healthy financial services to consumers.

Job Description

We are on a mission to liberate humanity from all the meaningless time spent managing their purchases and finances, so they can do more of what they love. Klarna was founded on a bold belief: that people are capable of achieving the extraordinary, even when faced with the seemingly impossible. Our journey has been one of continuous learning, facing immense challenges head-on, dedicating countless hours of hard work, and never wavering in our commitment or resilience - and now we are looking for individuals to join us on our journey and contribute to our mission.
Our engineers make some of the most significant decisions for the company and we are looking for bold, open and curious developers. 
Want to be part of the change? We're expanding several of our engineering teams, including; teams working on our core checkout product, payment services, fraud prevention, or improving our billing service and shipping credentials to name a few.

What you’ll get to do:

    • Own 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 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
    • Take ownership of system design, work with domain architects, own end-to-end problems, manage stakeholder communication, and mentor junior engineers
    • Drive knowledge sharing through demos, presentations, and tutorials

To succeed in this role, we think you should have:

    • Strong coding ability in Javascript
    • Experience with advanced JavaScript libraries and frameworks
    • Experience with APIs and product development
    • A passion for writing clean and testable code
    • Experience with Agile practices (Pairing, TDD, BDD, Continuous Integration, Continuous Delivery)
    • Working proficiency in English

Some of the technologies you’ll get to work with:

    • JavaScript/ TypeScript
    • React and React Native
    • Redux
    • Node.js and Express.js
    • AWS, Splunk, Ansible, Terraform, Jenkins, Docker and Kubernetes
*** We know some people might not think they tick every box (ie coming from a non-JS background). But if you're excited about the prospect of joining Klarna and believe you can add value, we'd still love to hear from you.
How to apply: please send us your CV or LinkedIn profile in English.
Relocation: Unfortunately we do not offer relocation for these roles and would need suitable applicants to have the right to work in the EU i.e Citizenship, Residency, EU Passport, Bluecard etc
About Klarna
Since 2005 Klarna has been on a mission to revolutionize the retail banking industry. With over 150 million global active users and 2 million transactions per day, Klarna is meeting the changing demands of consumers by saving them time and money while helping them be informed and in control. Over 450,000 global retail partners, including H&M, Saks, Sephora, Macys, IKEA, Expedia Group, and Nike have integrated Klarna's innovative technology to deliver a seamless shopping experience online and in-store. For more information, visit
It is our commitment that every qualified person will be evaluated according to skills regardless of age, gender, identity, ethnicity, sexual orientation, disability status or religion. Please refrain from including your picture and age with the application.
About Engineering at Klarna
Engineering at Klarna is an inspired, customer focused community, dedicated to crafting solutions that redefine our industry. Working in small, highly collaborative Agile teams, you and your team will have a clear mission and ownership of an important outcome that supports Klarna and our customers. At Klarna we optimise for quality, flow, fast feedback, focusing on end-to-end ownership, continuous improvement, testing, monitoring, and experimentation. We aim for teams that are inclusive, helpful, and have a strong sense of ownership for the things they build. 
Check out what it's like to be an engineer at Klarna here.

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