
Senior Fullstack Engineer - Javascript
at Klarna
Posted 19 hours ago
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- Compensation
- Not specified
- City
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Klarna is hiring a Senior Fullstack Engineer to design, develop, test, deploy and maintain scalable customer-facing systems using modern JavaScript/TypeScript. You'll work in small autonomous teams, contribute to end-to-end product development, and mentor peers while adopting best practices like TDD, CI/CD and pair programming. The role emphasizes React/React Native on the frontend and Node.js/Express on the backend, with exposure to cloud, microservices and data/AI problem spaces.
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!





