Initial telephone interview with HR to answer simple screening questions. Second telephone interview with director of department applying for. Third in-person interview with multiple panels and department heads. Great experience! Everybody was super friendly and loved their jobs. Nobody I talked to (at any level) wanted to work anywhere else. Very tough to get into, though. Most senior people worked their way up through the company or had significant consulting backgrounds. My only requested improvement is to provide feedback to rejected applicants. They help employees grow professionally; this should extend to everybody.