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Klarna

Senior Fullstack Engineer - Javascript

Klarna
Sweden · Full-time · Mid-Senior
What You Will Do

  • Tackle specific problem spaces critical to Klarna’s current needs, with ample growth opportunities in a fast-paced business environment.
  • Bring innovative ideas from diverse areas, including information retrieval, large-scale system design, data storage/processing, security, artificial intelligence, UI design, and mobile development.
  • Develop your professional skills in an entrepreneurial organization that encourages working with your areas of interest.
  • Use state-of-the-art technology to solve real problems for our customers at a massive scale.
  • Design, develop, test, deploy, maintain, and improve software; take full responsibility for the lifecycle of your code.
  • Share your knowledge and help the team evolve best practices; act as both a mentor and mentee.
  • Work in small, autonomous teams with short release cycles.
  • Contribute to open-source projects: Klarna GitHub.

Who You Are

  • Proficient in TypeScript and Node.js.
  • Experienced with common JavaScript libraries and frameworks.
  • Skilled in React and React Native.
  • Knowledgeable in product development, cloud technologies, and microservices.
  • Passionate about writing clean and testable code.
  • Familiar with Agile practices, including Pairing, TDD, BDD, Continuous Integration, and Continuous Delivery.

Awesome to have

  • Experience with JavaScript / TypeScript.
  • Familiarity with React + React Native with Redux.
  • Experience with Node.js and Express.js.
  • Knowledge of REST API and GraphQL API.
  • Familiarity with Kafka, internal design systems, AWS, Splunk, Datadog, Jenkins, and Docker.

Please include a CV in English.

Curious to learn more about Klarna and what it’s like to work here? Explore our career site!

Key Skills

Ranked by relevance

react javascript artificial intelligence continuous integration design systems react native typescript jenkins graphql datadog splunk kafka cloud tdd aws ui
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Country Guide

Sweden

Nordic quality of life with strong tech brands

Posted
Mar 03, 2026
Type
Full-time
Level
Mid-Senior
Location
Stockholm
Company
Klarna

Industries

Software Development

Categories

Engineering

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