AT&T

I only had one round of interviews because I was hired as a contractor. I was asked about some SQL-related coding and behavioral questions. I think, because of the team, this interview was relatively easy.

I had a phone interview that lasted about 20 minutes. The interviewer asked a bunch of questions that were all conceptual. The questions revolved around object-oriented programming concepts and data structures. This is the first of three interviews

Multiple rounds. For each round, you're progressively getting deeper into the title and show your knowledge on the topic or role at hand. Be able to talk about prior projects.