I applied online. The process took 2 months. I interviewed at AT&T
Interview
Consists of three interviews total: 1. Phone interview with recruiter, 2. Skype interview with recruiting manager, 3. Case interview where you have to pitch a product also includes video interaction with interviewer.
The first and second interview consisted of behavioral type questions, there was a little overlap in the questions that were asked. Both interviews took 45 min - 1 hour to complete including my questions towards the end. The last interview takes 1 hour to complete but 30 min is given to the candidate for preparation after reviewing study material.