I had three rounds of interviews. The first was a video interview with the team leader, the second round was also via video with the same team leader and some additional team members and a third interview in person in their office in Stuttgart with a Director. The first interview had a couple of quick coding questions at the end, but nothing too complex. The second was a longer technical interview where I was asked to do some simple signal processing. The third one, in person, was a bit longer with some white board coding as well. Being my first time doing live coding I was quite nervous but everyone was extremely nice which made things easier.