13 ago - Milano
Klarna
Job-ID: 63ee736e-dab5-437f-a5e6-beff8c6cd460 Location: Stockholm; Milan Salary: 1076536 - 1248781 SEKType: Tempo pieno Posted: 2026-02-18 Contact: ivy.chiang@ What you will do Own and evolve core parts of the Klarna client platform with a strong React Native focus, shaping foundational capabilities used across the app ecosystem. Solve complex, cross-cutting technical problems that impact developer experience, stability, scalability, and long-term maintainability of the platform. Lead large initiatives spanning Java Script and Type Script, frontend build tooling, native i OS and Android integrations, and CI/CD pipelines.
Balance short-term delivery needs with long-term platform strategy, ensuring solutions are sustainable and aligned with the broader evolution of the Klarna app. Act as a technical multiplier by providing mentorship, conducting thoughtful code and architectural reviews, and guiding engineers toward high-quality platform standards.
Who you are A React Native and frontend platform expert with strong platform thinking and a hands-on mentality. Deeply knowledgeable about React Native internals, including how it builds, runs, and integrates with i OS and Android. Highly proficient in Java Script and Type Script,
with a strong understanding of runtime behavior and architecture patterns.
Experienced with frontend build systems and tooling, including bundlers, transpilers, Babel, Metro, and Webpack concepts. Comfortable debugging complex runtime and build-time issues across the Java Script to native boundary. Proven in evolving React Native at scale, including managing upgrades, shaping architecture, and improving tooling.
Solid in basic AWS fundamentals such as compute, IAM, networking, monitoring, and database basics. Familiar with CI/CD pipelines and modern delivery practices. Knowledgeable in security and privacy fundamentals.
Comfortable working with Node.js, Express, and database fundamentals. Awesome to have Principal-level problem-solving capability without requiring deep native-specialist expertise. Comfortable owning ambiguous, high-impact problems and driving them to resolution.
Thinks in platforms rather than features, with a systems-oriented mindset. Pragmatic and delivery-focused, while remaining opinionated about long-term quality and architectural integrity. Actively mentors others, raises the technical bar across teams, and contributes as a collaborative, high-trust team player.
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