I got contacted by a Klarna recruiter, who was kind and helpful. I first got an online logical test (15mn) and online coding challenge test that I needed to submit within a week. The feedback were positive so I was invited to have 2 on-site interview in Berlin. The first technical interview with 2 engineers, but unfortunately I wasn't prepared to a whiteboard interview (I'm not sure if I got communicated this information). The second interview with a Team Lead, mostly behavioral questions. I got positive feedback from the team lead and the engineers, but my performance on the whiteboard wasn't enough to continue with the process. All in all, it was a nice experience.