Functional Senior Engineer - Stockholm

About Us

With over 85 million global active users and 2,5 million transactions per day, Klarna is on the way to becoming the world’s favorite way to shop. To help us get there, we’re assembling an unparalleled global talent team—accelerating individual careers, and disrupting entire industries. We’re looking for people ready to achieve the extraordinary and embrace our bold ambitions as we shape the future of payments and fintech. Will you join us?

What You Will Do

As part of the Partner Bank Networks team, you will take a lead role in the development, operation, and evolution of Klarna’s integrations with partner banks. You will be responsible for:

Leading the development and operation of systems that facilitate payments and collections.
Maintaining stable integrations between Klarna and various banking partners.
Proactively identifying and implementing improvements to system design and tooling for bank operations teams.
Solving integration issues, handling exceptional cases, and ensuring smooth, scalable operations.
Collaborating with internal and external stakeholders to ensure alignment and successful deliveries.
Mentoring less experienced engineers and contributing to the overall growth of the team.

You will play a crucial role in ensuring Klarna’s systems remain a reliable and unified interface between Klarna and its partner banks.

Who You Are

Proven experience with Erlang + OTP (Elixir experience is considered, but with a preference for switching to Erlang).
Familiarity with Postgres, Kafka, and AWS is highly desirable.
Excellent problem-solving skills with the ability to challenge the status quo and drive transformation within systems and processes.
Strong communication skills, capable of efficiently collaborating with stakeholders and leading team projects.
Experience working in complex environments with a focus on simplifying operations.
A proactive leader with a passion for mentoring and driving team success.

Awesome to Have

Experience building scalable, reliable payment and collection systems.
Familiarity with cloud-based infrastructure and tools like AWS.
Python Knowledge

Closing

Please include a CV in English.

About Klarna

Since 2005 Klarna has been on a mission to revolutionize the retail banking industry. With over 85 million global active users and 2.5 million transactions per day, Klarna is meeting the changing demands of consumers by saving them time and money while helping them be informed and in control.

Over 575,000 global retail partners, including H&M, Saks, Sephora, Macys, IKEA, Expedia Group, and Nike have integrated Klarna's innovative technology to deliver a seamless shopping experience online and in-store. Klarna has over 3,500 employees and is active in 45 markets.