3 rounds of technical questions. Overall doable, but preparation is needed. Mostly questions about statistics and probability theory. There were a few brainteasers. A question about conditional probabilities and a some questions about measure theory (as this was the topic of my thesis).

It took 2 interviews. First interview was more high level, not in too deep on content. Second interview was with a manager and a senior team member. A lot of questions were on the content, modelling skills, programming skills, regulation and etc.