Multiple rounds of interviews with multiple people, some that you would be your boss and some that would be your co-workers. Very long process including phone interviews, skype interviews, and in person interviews. Every single person is testing your personality. EVERY SINGLE PERSON YOU INTERACT WITH. The only issue is that many times on the phone or skype interviews the person interviewing is heavily distracted. Many times they aren't setting aside time to really interview you and pay attention.