I applied online and received an invitation from HR shortly. They scheduled the first phone interview with a senior R&D manager. I was impressed by that person from the first minutes of the interview; he seemed to be a knowledgeable and experienced manager. We talked about my background, then he asked several basic questions, for example, the atoi C function and counting the amount of 1-bits in a byte. Then we discussed an NVIDIA-specific product and its implementation, step-by-step. Knowing OpenGL could help here, but it isn't necessary; it seems that a graphics-unexperienced engineer can get through it too.

Several days later, a second phone interview was scheduled with a software engineer who reports to the previous interviewer. He continued to ask me about graphics-specific products and implementation. A short time after beginning, I got lost. I was unable to understand which stages were considered to be solved and what the current problem we were discussing was. For that mess, I can blame myself for not being familiar with the graphics world at all, and a little bit, poor call quality.

Naturally, after the second phone interview, I got no feedback, not from R&D and not from HR.

Count the amount of 1-bits in a byte.