I had 2 screen interviews with the recruiter. Then a phone screen with the hiring manager. I was invited to a series of in-person interviews, to which I had to prepare a 45 minute presentation. This was followed by a sequence of five 30 minutes interviews. Interviewers asked more or less the same questions. At the end of the last interview, the guy just left the room. No thank you, no good bye, no one to see me sign out. Following this, I did not get a response to my follow-up email, or a rejection email.