One interview, an hour long. Discussion included my prior experience, why I think my skills correlated to the program. We discussed that while it would be a career change, my experience and qualifications would be a good fit.

This is for a student position. Two rounds of interviews - first with manager and person currently in the position. Second round was with a faculty/director of the program. It was pretty straightforward. The first interview was more about tell me about yourself and checking my skill levels. Second one was unstructured - more of a chat than formal interview.