Pretty fun interview, it's a superday style 2.5 hours long interview. With half of it being technical interview and half of it being a group case study behavioural interview. For the technical interview, they would ask you a few concept questions (nothing too difficult), and a few coding questions (potential follow up to optimize your own codes and the Big O). For the group (3 teammates + you) behavioural one, it would have a fun little kick start event and then give you a business case for you and 30 mins to work on. And deliver a 5 mins group pitch at the end.