I applied in-person. The process took 1 week. I interviewed at NTT DATA (Bengaluru) in Dec 2015
Interview
Interview was taken in an consultancy, where the manger asked about some technical issues and your personal background, and what is your goals. The interviewer want to check the stability.
I applied through a staffing agency. The process took 5 days. I interviewed at NTT DATA (Austin, TX) in Aug 2014
Interview
interviewed first by staffing agency, then the team lead and the hiring manager.
interview questions is a combination of technical and customer services questions.
make sure you prepare for the interview. general questions like when computer is turned off how do you determine cause of the issue.