Standard Elevator Systems interview questions

The CEO, Jimmy He, (last interview) was extremely rude. Very unprofessional (he was late to interview, interrupted by other calls frequently during the interview, didn't answer my questions or make an effort to understand my questions), insulted me multiple times (always a plus), made remarks on my ethnic background and made condescending remarks on my education, intelligence, and capabilities. The other interviews--screening, assessments (AutoCAD/Solidworks, and they weren't very difficult), department leader--were all really good, but the last interview really left a sour taste in my mouth. Literally the worst interview experience I've ever had. 0/10, don't recommend.