There were 2 technical rounds and 1 culture fit round. First round: The interviewer asked questions from my resume, and later asked 2 DSA problems. The total time spent in this interview was about 45 mins. Second Round: I was asked to go into details on my projects, again 2-3 questions from DSA were asked. I do not remember the questions but these were from tree data structure. At last, Operating Systems basics like memory management, semaphores, kernel, and CPU scheduling algorithms were asked. It went for around 1 hour and 15 minutes. The last round was with Management just to see the cultural fit. There were standard questions.