Senior Fullstack Engineer - Javascript
Design, develop, test, deploy, and maintain software at massive scale using TypeScript and Node.js for Klarna's platform in Stockholm.

Stockholm, SE · Founded 2007 · 5000+ staff
Klarna is a global payments and shopping service that provides smooth and flexible solutions to millions of shoppers and merchants.
Roles based in: Milan, Stockholm
Seniority: 4 senior · 2 principal · 2 lead
Hiring engineering roles here since July 2026
Curated from live Klarna postings. Click any role for the full brief.
Design, develop, test, deploy, and maintain software at massive scale using TypeScript and Node.js for Klarna's platform in Stockholm.
Lead the design and operation of Klarna's analytical data processing platforms on AWS supporting large-scale batch workloads.
Lead the design and development of scalable JavaScript applications using TypeScript, Node.js, React, and AWS at Klarna's Stockholm office.
Drive Klarna's technical direction by architecting scalable and resilient distributed systems in Milan.
Own global UW tables for Klarna's credit decisioning platform using SQL, PySpark, Python, and AWS services in Milan.
Build and productionize machine learning pipelines powering Klarna's credit decisioning at scale.
Own and evolve Klarna's client platform using React Native to shape foundational capabilities for iOS and Android apps.
Design and deploy scalable backend Java services for Klarna's critical problem spaces at massive scale in Milan.
Develop and operate Klarna's shared Kafka clusters handling 125 TiB of data across Stockholm or Milan.
Develop infrastructure and features for KEP Pipelines, Klarna's main CI platform using Go or Python in Stockholm.
No longer open on Klarna's site. Kept for reference — saved archived roles stay in your dashboard.