Applied for a position as a college graduate. The first day there were four engineers who interviewed me. All behavioral questions and focused on trying to sell the company and working on mainframes. They even brought in someone undergoing training to describe what it was like. The interviewers were very friendly. The second day was another interview with management and either was very unprofessional or an interview style I've never heard of before. After a couple of minutes of looking at my resume and before even saying anything, he commented at how I was probably "king of the idiots" based on my high GPA. Asked questions around design patterns, concurrency, etc in a condescending manner. I feel like I answered them correctly as I later got offers at top tech companies with similar answers, but definitely didn't give them confidently as I was being put in a stressful situation.