Very easy to navigate through, HR was very pleasant. I phone interviewed first with folks from FL, then since I was in St. Petersburg, FL visiting family I met with the hiring manager and a co-worker. After that, I was flown for an interview in Watertown, MA where I interviewed with about 6 people, some of the interviews were 1-on-1, and some of them there were 2 people in talking with me at one time.