The most negative interview experience in my life. Not because I did not perform well. But due to the interviewer. He did not have common courtesy to introduce himself or about the company. Directly asked what I am doing and did not care to listen as I was explaining. Then jumped to questions directly and asked if I knew how to solve and then jumped to another one, waited for 2 mins and said this is enough. I pity people who worked with him. The most basic thing humans have to learn is manners.