Starting with conversation with HR people, roundtable interview asked hours long behavior questions, some of which were tricky and needs some time to answer but manageable. Overall they were nice and gentle, could feel they try to give me comfortable environment. Then, there were multiple 1:1 interviews that exhausted me because simply it was long.

There was a STAR interview question set. They ask many of the same questions, like what would you do in this difficult situation? They also ask many personal questions about your academic and work success.