I applied through an employee referral. The process took 2 weeks. I interviewed at HBO (New York, NY) in Feb 2012
Interview
It was pretty easy and laid back; just asked basic questions regarding my interest in working there, and what part of filmmaking I was interested in most, and whether or not I would be okay with the long hours. Overall I felt pretty good about it and luckily I was selected to come back, and ultimately I got the job.