First of all , The HR was very cooperative and that's the only good thing with the overall interview. Once HR put me through the next technical round , The guy who took my technical round was based out of US.Probably he was one of the worst interviewers I had come across 1.He joined late for the interview close to 7 mins it was very late for me in India. 2.He was yawning through out when I was introducing myself and my work. 3.He gave a coding excercise and I gave the solution to him in notepad . The one with brute force was right and he agreed then he asked me to optimize and he gave some hints and I could do it at the end .He went on to make some remarks which I found completely un necessary and un professional. 4.He went on to give some design problem and was expecting a text book based solution like introducing load balancers etc which I found amusing for his experience . Request the HR to have a open feedback mechanism post interview . I found the HR to be very friendly and was recipient of the feedback hope she takes care of such things not happening again .