I applied through my college. The first round consisted primarily of aptitude questions. There were 2 sections - English and Mathematics. The questions were of moderate level. Those who cleared the first round were called in for the interview round. There were 3 rounds of interview-2 technical,1 HR. There was elimination after every round of interview. Finally those who cleared all the three rounds of interview were offered the job.

first round is just a recruiter call, technically it was scheduled but they called me randomly then got a quick rejection from the hiring manager after a week and a half of waiting