Very worst interview process. They don't have requirement they just call for collecting the resumes. It will take 6 to 8 hours for just first round of interview, it will be at end of the day the interviewer calls 100 candidates and they just complete the process in 30 mins, just by asking one question and the symbol 'you can leave for the day'. The worst thing is that there will be only 1 interviews for a particular skill for 100 + candidates. I have went for Deloitte interview couple of times and experience same thing. Only attend interview if you have plenty of time or if you want to see their floor.