Applied online and received a call about a week later for a phone interview and then a week later was invited to Denver for a F2F. It was short probably only 15 minutes or so. There is a manager in the room as well but she didn't ask any questions she was just observing. Then a week later was called back to do fingerprinting and drug testing. Yes its a casual airline but I saw people at the interview who were not looking professional, so dress nice.