I had 3 interviews in total. The first interview normally is a personal fit one, where you walk the interviewer through your CV and tell him what your motivations are. The second and third interviews were case oriented where I had to solve one case each. One was very quantitative drive with a lof of calculations by hand, and the other one was rather focusing on some commercial sense.

Standard round of three interviews on one day within their Düsseldorf office. Cases as expected. 3 out of 12 applicants were accepted that day. Need to specify practice one wants to join from the beginning