NVIDIA Software Engineer interview questions

Meet the recruiter at campus career fair. Took more than a month to get the email back. 30 Minutes phone technical interview, ask about details about the projects, data structure, and algorithms. No futher conversation after the phone screen.

I had a phone interview with a team lead who asked questions about my PhD thesis and work experience. Next week I had second phone interview with another team lead who also asked about PhD thesis and past work experience. After that I did not hear from the company for 3 months. I kept asking the recruiter. Finally they got back and scheduled a third phone interview. After that I was told they would not continue with the interview process.