I must say HR has so much attitude that reflects company reputation . HR DONT KNOW HOW TO TALK WITH EXPERIENCE ONE. Actually they use to call you to know just your CTC thats it.

There are 4 rounds in total. 1st and 2nd were technical, with two interviewers (probably future team lead and manager) in the first round, next was again with someone from the same team. The 3rd was with a guy overseeing the whole team from US. The 4th was with HR.