I met with an HR representative the day before my interview (normally HR interview are conducted in the morning the day of the interview, but he was busy then) to go over culture, benefits, etc. at APL. The day of my interview I first gave ~1 hour long presentation on my current doctoral research and answered questions from the audience. I then met separately with three groups (including the rotational program). Each group ran their interview process slightly differently. For some groups I met with all team members at once, and for some I met with groups of 2 at a time. The interviews were largely informal and asked behavioral questions along with questions about past projects and internships.