Talked to the recruiter initially and then was asked to come in for an onsite interview. There were 4 interviews, 3 technical interviews with engineers where I white boarded coding problems. The last was with the Director of the team.

I have applied through referral. They have called me for F2F interview to their office. There was interview scheduled with 2 interviewer. It was very good discussion in both round. I thought I should be selected. After two rounds of interview hiring manager told me they will collect the data point about the interview and will get back to you in next 3-4 days but they never told me anything about my feedback. it is very sad that they don't give proper feedback. It was really bad experience.