The interviewer was extremely unprofessional and rude. Late for five minutes for the interview and didn't apologize or find an excuse for that. Didn't say a word about the position and company. The entire interview went like he didn't know he had an interview scheduled with me. There was one subject field of the sensor development process I didn't know quite well and then the interviewer told me it's completely unnecessary to continue the interview process. I understand they get a lot of their engineers from outside the U.S. but TuSimple really should give their interviewers a fundamental training session on how to ask interview questions and respond like an industry professional.