I had three rounds of interviews.

HR was very polite and scheduled the interviews. The first two rounds were on the same day.

They gave me a coding test for one and a half hours, and then the hiring manager interviewed me. He was very cool and made it really comfortable.

HR found the feedback immediately and told me I had cleared the first round. I could either wait or come back another day for the third round. I chose to come back.

The third round was with two directors. I felt a bit tensed and could not do my best.

1. Coding round
2. Interview with manager (Technical)
3. Interview with a couple of directors (Technical)

1. Fix the crash and write some functions for a coding round.

2. Design a real-world control plane daemon that takes input from multiple modules.

3. Code the macro sizeof.

4. Code the macro offsetof.

5. How do you implement polymorphism in C?

6. Project-specific questions.