Got the first round interview through campus recruiting process. First round interview was with a manager. He was really easy-going and friendly. Met him before through recruiting events, however, heard from other people that he was an awkward person to talk to. Would recommend making small talks. Those go a long way.
Second round interview was about 2 weeks later. Consisted of a staff panel for questions, lunch, and then 3 back to back to back 20-minute interviews with manager and above. Like first round, I tried to be friendly and just make small conversations. Talked about sky-diving with a manager, she was totally into it. The partner I interviewed with called me about a week later to give me the offer.