Started with a phone screen and then a brief 1 on 1 at my school's career office. Two weeks or so later I had an on site interview that consisted of 3 1 on 1 interviews with my potential supervisor and some others in the department. The interviews had the feel of being free form and didn't have many penetrating questions, mostly asking for details about previous job experiences and school, and also talking about the job. I then went to interview with the HR person and we discussed mostly company infrastructure type topics. It seemed like a nice company to work for, for the right person, but I didn't feel like the fit was right for me.

Panel discussion with four interviewers, plus a discussion with Human Resources rep to cover benefits. Interview was hosted on site (pre-Covid). I interviewed with two different groups and the entire process took about four hours. I was required to present a brief on technical work for one group, but not the other. Clearly there are different interview styles across divisions.