Senior Python Engineer- GenAI

Who you are

• A solid engineer with hands-on experience in Python and FastAPI, ideally in platform or infrastructure contexts.

• Experienced with AI/LLM systems — including evaluation frameworks and observability tooling.

• Familiar with Kubernetes and passionate about building reliable, scalable AI infrastructure.

• Eager to contribute to engineering culture and help move Klarna forward on the GenAI frontier.

What you will do

• Manage and operate Klarna's AI Gateway, ensuring reliable, low-latency access to AI models at scale.

• Onboard teams to the AI Gateway, configure model access, and support diverse use cases across technical levels.

• Adapt and improve evaluation tooling for LLM applications using LangSmith.

• Own tooling and processes that enable safe, compliant, and efficient GenAI use across the organisation.

• Document operational procedures, respond to incidents, and ensure platform stability.

• Drive knowledge sharing through structured learning programmes and help standardise AI content across the org.

Awesome to have

• Experience building or operating AI Gateways or similar ML infrastructure at scale.

• Familiarity with LangSmith or other LLM observability and evaluation platforms.

• Background in enablement, developer education, or internal platform evangelism.

• Prior experience shaping team practices or contributing to engineering culture at a fast-moving company.