What you will do

• Design, build, and operate Klarna’s global edge and public infrastructure to support highly available, low-latency services at massive scale

• Lead initiatives to standardize how public-facing services are exposed, secured, and routed globally using edge-native capabilities

  • For example: defining reusable patterns so services can be made globally available with minimal bespoke configuration

• Own and evolve edge security and delivery using AWS CloudFront and AWS Web Application Firewall (WAF)

  • For example: strengthening baseline protection against abuse while keeping latency low for real users

• Reduce architectural complexity by simplifying traffic flows and removing unnecessary intermediaries

  • For example: enabling more direct, edge-to-service communication paths

• Improve observability of public infrastructure across systems

  • For example: making it easy to understand how public entrypoints behave and how they relate to backend services

• Collaborate with frontend and platform teams on edge-driven performance initiatives

  • For example: caching, prerendering, or similar techniques that move lightweight logic closer to users

Who you are

• A specialist in edge or public infrastructure with deep, hands-on experience in AWS CloudFront and AWS Web Application Firewall (WAF)

• Strong understanding of global traffic management, caching, TLS, routing, and failure modes at scale

• Experienced in designing resilient and secure architectures for critical customer-facing systems

• Experienced in security and traffic protection at the edge

  • For example: bot mitigation, rate limiting, or abuse prevention using WAF capabilities

• Strong hands-on experience with infrastructure-as-code AWS Cloud Development Kit (CDK) and Terraform, with the expectation to work with both

• Programming language: TypeScript

• Comfortable working with serverless and managed cloud services such as AWS S3, AWS Lambda, and AWS Step Functions

• Able to reason about both infrastructure and application concerns

  • For example: understanding how frontend behavior, backend services, and edge configuration interact

• Collaborative, pragmatic, and motivated by reducing complexity while increasing reliability

Awesome to have

These are areas you might have experience in, or be interested in growing into over time.

• Experience with frontend engineering and modern frameworks such as React

  • For example: working with Server-Side Rendering (SSR), hydration, or performance-sensitive rendering paths

• Knowledge of web performance optimisation techniques

  • For example: reducing time-to-first-byte or improving perceived load through caching and streaming

• Familiarity with edge execution or serverless request-handling models

  • For example: running lightweight logic closer to users

• Experience building or operating observability solutions for large-scale distributed systems

Please include a CV in English.

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