Interview is very relaxed, although the process itself is drawn out. I initially started with a phone interview. It was conducted by a low level person, essentially reading questions of a piece of paper. If they like those answers enough you get called in for another interview in person. I've never had more than those two interviews, but I think a third one is possible. Even after interviewing, it can take a month or more for them to make a decision. I was initially told two weeks, and then told two weeks again when I called on the deadline for an update.