The first round consisted of a written test, which had 4 sections. The first section were on quantitative, data interpretation skills, english (sentence correction and word usage mainly) and Programming skills. The first three sections were quite easy while the third one had a whole page of text on reading which you had to answer the questions which mainly tested on how would be retreieve the relevant info from that text. It was easy but consumed a lot of time which was already short. Then there were two rounds of interview, both of which tested mainly the communication skills and how descriptive you can be in your responses (each lasted 15-30 min). At each point you should have a reson to back that why are you opting for IT based services job and not the one of your core engineering discipline.