I applied online. The process took 1 week. I interviewed at Tech Mahindra (Chennai) in Feb 2015
Interview
First Level: Telephonic with MD Commercial from Mumbai and Hyderabad conducted for at least an hour in conferance.
Second Levele: Direct Interview with VicePresident- Commercial attended in Tech Mahindra Chennai location
Third Level: HR Interview on Final proceedings.
They may test your stress level whether you are alert in between the interview. It may be simple but in between your answers, they asked me what is the date today? Which is no where related to my answer and was blank for 5-10 seconds.