The interviewer was very rude and derogatory in his line of questioning. He was an Indian.
I passed my BTech back in India, 14 years back. The first question of this interviewer was, whether I got the job in on-campus interview or off-campus.
This was the first time any interviewer asked how I got my job. This is just ridiculous. At that time, I was in USA, and was looking for jobs in India, since I was trying to move back permanently to India, he asked what VISA I was in USA. It does not even matter for the job posting, since it was in India, This guy left after 30 mins, and another person joined, even though this guy was supposed to take whole 60 minutes interview. The other guy who joined wasn't even prepared for the interview and didn't even have my resume. A pretty much waste of time.
Avoid this company.