Contacted by the internal hiring manager and had to go through two phone interviews before being invited to interview in person. The first phone interview was a very simple get-to-know-you kind of thing. After the first you're sent links and material to prepare you for the second, where you're expected to know about the company and the position, as well as why you want to work there, what motivates you, etc. Finally the in-person interview. This is very conversational, and there isn't too much pressure on you. The interviewer just asked about my past experiences, jobs, and schooling. Getting a feel for work ethic, personality, motivations, etc. There was one more in-person interview where you spend a half-day shadowing someone at the position, as well as more behavioral interview questions, but I was not asked back for that one.