Multiple rounds, all very technical. The first round was more of a fit interview, but it already included some simple analysis or problem-solving questions related to data. The second round was a whole case including a lot of data. It was around 3 hours in total and you had to present your findings directly to the interviewer.
Interview questions [1]
Question 1
What programming languages do you know? Give an example of how you use that in your projects or to solve problems.