I applied on their website and after a couple weeks, I contacted a recruiter via LinkedIn and she pushed my application to the College Recruiting (since I was finishing up my PhD). From there, they quickly scheduled an on-site interview. The interview process was pretty straight-forward. I spoke with a lovely HR representative first and she asked me basic behavior questions (Why APL? Where do you see yourself in X years? Do you work best in groups or solo? etc.). She was extremely upfront and really set the tone for the day. I then interviewed with the head of REDD who gave me an overview of APLs mission. I then gave a 45 minute talk on my research in front of the group who brought me in for an interview. Because my field of study is a specialty, I only really fit with one group at APL. No malicious questions, simply technical questions about methods/results/future outlook of my work. They know their stuff, technically, but nothing I had not heard previously at conferences. I then met with members of the group individually where they asked more questions about my work and other behavior questions. I definitely got the feeling that they were looking to see if I was a good "fit." All-in-all, it was a long day, but it was rather enjoyable. I later had a follow-up phone call with the group (primarily just making sure I knew what types of projects they project for me to start on) and received an offer shortly after that.