The interviews are pretty straightforward: 1) 45-min phone screening with the hiring manager, 2) on-site interviews including a presentation (case study + portfolio reviews) and four one-on-on interviews.
The phone screening was focused on behavioral questions and product prioritization / decision making process. It was quite smooth and not that difficult.
The presentation for the on-site interviews was about my previous projects and one case study highly relevant to the actual problem the role will be solving. For the case, they provided high-level context but very limited data, so it's quite hard for a candidate to tackle the problem and need to make tons of assumptions. However, in the following 1:1s, they did not care about the solution but more about why I proposed it and the thought process, so it's actually not that challenging to answer these questions and the conversations were quite engaging. Besides questions about cases, they also asked some behavioral questions in the 1:1s as well, mostly about how I made prioritization and resolved conflicts.
Overall, I'd say it's a fun interview experience and people were generally nice and friendly. However, if the case study can be less role-specific and more open, it will be better for a candidate to prepare this case in a short timeframe.