Lead Engineer — AI-Driven Payments Platform

Klarna; Stockholms kommun; Hybrid; SEK 900,000 - 1,300,000; Full time

Job summary

Klarna is seeking a Lead Engineer to own and evolve the systems that move money for millions of people. The role stays hands-on with coding, architecture decisions, and active influence across teams.

You will shape how AI is used in daily practice and mentor engineers while aligning technical choices with business value. Expect a role that can shift domains as the business changes, with responsibilities spanning design, reliability, and cross-team collaboration in a hybrid office setup.

Qualifications

• Built and operated systems with reliability and performance demands at scale.
• Able to articulate trade-offs and the roads not taken.
• Set the standard for how your domain uses AI in everyday practice.

Responsibilities

• Make sound, defensible technical decisions and explain choices clearly.
• Consider how changes fit the wider architecture and impact downstream components.
• Tie technical decisions to business outcomes and size solutions to value.
• Design for reliability, auditability and controls in a regulated banking context.
• Mentor engineers and raise the technical bar across teams.
• Lead initiatives across multiple teams without formal authority.

Skills

Java

JavaScript

Python

System reliability

Performance at scale

Leadership

Job description

Klarna is seeking a Lead Engineer to own and evolve the systems that move money for millions of people. The role stays hands-on with coding, architecture decisions, and active influence across teams.

You will shape how AI is used in daily practice and mentor engineers while aligning technical choices with business value. Expect a role that can shift domains as the business changes, with responsibilities spanning design, reliability, and cross-team collaboration in a hybrid office setup.