Lead Fullstack Engineer - Javascript

Back to all rolesLead Fullstack Engineer - JavascriptApplyJob detailsEngineering / EngineeringStockholmFull-timekr 81,055 SEK - kr 92,403 SEKWhat you will do• Work on specific problem spaces critical to Klarna's needs, with opportunities to switch teams as both you and our fast-paced business evolve.• Lead the design, development, and maintenance of JavaScript-based applications, ensuring high performance, scalability, and reliability across both frontend and backend.• Work with modern technologies such as TypeScript, Node.js, React, and React Native to build seamless and scalable solutions.• Utilize cloud technologies, primarily AWS, to develop and deploy services.• Engage in the full project lifecycle—from conception to deployment and beyond—ensuring projects are delivered on time and to specifications.• Collaborate with cross-functional teams across Klarna to align on integration strategies and optimize system architecture.• Drive an engineering culture within the team, emphasizing innovation, quality, and continuous improvement.• Proactively identify and mitigate potential issues in our distributed and financial systems.• Work in small autonomous teams with short release cycles.Who you are• Proficient in TypeScript and JavaScript, with strong experience in Node.js and modern frontend frameworks (e.g., React / React Native).• Experienced in architecting and building scalable, robust systems across the stack.• Skilled with cloud technologies, especially AWS.• Adept in distributed systems, with the ability to anticipate and mitigate issues proactively.• Independent, able to manage projects end-to-end and contribute to technical direction.• A strong communicator, capable of collaborating effectively across teams and domains.• Experience mentoring others and contributing to a positive engineering culture.• Working proficiency and communication skills in verbal and written English.Awesome to have• Experience with microservices architecture and event-driven systems.• Familiarity with REST and/or GraphQL APIs.• Experience with tools such as Kafka, Docker, Jenkins, Datadog, or Splunk.• Experience working in fintech or other regulated environments.Please include a CV in English.Curious to learn more about Klarna and what it’s like to work here? Explore our career site!Upload your resume to autofill the applicationUploadFirst name *Last name *Email *Dial codePhone numberLinkedIn profile *Please upload your resume (preferably as a PDF file) *Click or drag file to uploadSupported file format: .PDF; Maximum file size: 10.49 MB; Maximum file: 1;Mandatory Are you currently based in the location the job is posted in? *YesNoAre you legally authorised to work in the location where this position is based? *YesNoWill you now or in the future require sponsorship for employment authorization or visa status in the location this position is based? *YesNoAI disclaimerThis application process may use AI-enabled systems to support candidate evaluation based on factors such as experience, technical skills, and qualifications. All processing is carried out in accordance with applicable data protection, AI governance, and labour laws. Human oversight is maintained at all stages, and final hiring decisions are made by people. Personal data submitted as part of this application is not used to train AI models.I have read and understood the privacy policy and acknowledge that my personal data will be processed as part of this application.ApplyApplyHire withPrivacy Policy