There were several rounds, first of all we had our screening test consisting of 2 sections first of which was 20 questions on aptitude to be answered in 45 minutes and the second one consisting of two programming question out of which one was to be selected and answered in 20 min. Around 40 people were shortlisted(i was one of them) and called for interview they had 2-3 technical round and one 1 hr round.