The processes started with a very quick phone screening that went over my interests, why I wanted to work for Facebook, etc, which was followed up by one or two phone interviews in which I was asked to enter code into a browser and answer a few technical questions. They also asked a few questions about my resume. I took a flight to their on-site interview which included a gorgeous hotel and generous compensation for food, etc. The on-site interview was a few hours but it flew by. Some interviewers seemed experienced and others seemed like they didn't know what they were doing in the interview room. Everyone I interacted with (from phone screening to the actual interviews) seemed very organized and the entire interview process was extremely smooth. I greatly appreciated their coordination and team effort.