Questions about your projects, motivation for the role and a few questions on how you would solve problems related to the job. Also a few statistics questions; No brainteasers. Not that hard but complicated to prepare for because the questions are specific.

4 interviews - behavioural & product focused. They want someone who can seamlessly fit into the team and start adding value from early on. Nothing too technical, few mental maths questions, expected value on coin flips and dice rolls.