I applied online. The process took 3 weeks. I interviewed at T-Mobile (Bellevue, WA) in Mar 2012
Interview
6 round of telephonic/face to face interviews with director/VP level people. Questions ranging from case question to real problems at hand. The interviewers were very relaxed and kept asking questions for 30-40 minutes non-stop. Know your resume and past experience really well.
Interview questions [1]
Question 1
What kind of strategies will you use to hold back customers who are not that happy?