The HR contacted me, for a phone screen, with the hiring manager. Time and date were scheduled, over email. First Phone screen- The hiring manager called, and explained the role. He went over my resume, and asked questions about my project. Asked me to explain some projects. Then asked what is virtual memory, whats a mutex, difference between a mutex and a spin lock. He asked some behavioural questions like- How important is communication? What are advantages of being a team [player versus working alone? if you were to pick a manager, what traits would you look for? If you were a manager, how would you pick engineers ( what traits etc). How important is marketing skill in an engineer? Overall -cordial, polite, to the point, and nice. Got through first round- Got email the next day, about second phone screen. Second phone screen was with an engineer. He was also polite, cordial. Introduced himself, explained about some background. He saw over my resume, and asked some resume based project. Then he asked me if i have a pen and a paper with me. I did, and he asked me to write a memcopy implementation in C. I fumbled a bit on this and goofed up the implementation. He asked me to optimize the code, and what would the max optimization would be possible in such a code? He also wanted the code to be cross platform across 32 bit as well as 64 bit.