Four Rounds of interviews with four different hiring managers over three days. The intensity increases as you move onto each round and were about one hour long each. The last round lasted a little over two hours.

These people seem to truly be looking for good people to join T-Mobile - it's a happy atmosphere where people are open and are expected to work well with one another and collaborate. They want to get to know you and will bring you in for a few different interviews to do so. You'll meet with potential teammates, senior engineers, managers, senior managers, and directors.