NVIDIA interview questions

Four phone interviews, each 45 min. First round was talking something about behavior question like what do you like in nvidia, how do you know us, and some basic C programming problems. Second and third round interview was on the same day with 1 hour interval, many low-level C programming problems, and bit operation: how to calculate 7*x without using plus and multiplication (using bit shift and subtraction); fourth interview was about my personal Operating System projects, mainly on process schedule, memory management. Knowing Offer about two weeks after the last round interview. Very good interviewer - easygoing engineers. Quite good company. I'm a tech fan of NVIDIA for more than 4 years!!!

I applied for a posted position in beginning of January and got a email for a phone interview at end of February for a different position. Things don't go super fast during the interview process but they do seem to be thorough. Eventually they flew me down to have a 1 on 1 interview with a number of different people. They probably should do more to ensure they don't repeat the same questions between different people. I think I did fairly well in the interview and I would have liked to get some feedback on why I didn't get an offer so that I could do better on my next interview but overall I think it was a positive experience to see what else is out there. They seem like a good company to work for - overall the people I met seemed happy.