For the interview process, first there will be a written test which includes topics from basic mathematics and English that tests your grammatical skills. The most interesting part is the section that tests your problem solving skills. One can expect puzzling questions in this section and working on "puzzles to puzzle you" book may render helpful. If the candidate clears this round, as per our interview we were directed to a panel (HR round) where we had a personal talk / interview with an employee from the hiring team who tested our communication skills. (some times again problem solving skills). With this you are done with the interview process and will be waiting for the final list of selected candidates and luckily I am one of them.