There were three rounds of interview. First interview was phone screen interview focused on past projects . There were two onsite interview. First interview was with three different people. Hiring manager and other two. Hiring manager asked me question on C languages and some concepts of operating systems.Second onsite interview was around 3 hours long. They asked me about algorithms and it's implementation in C language.

Coding assessment, then live coding assessment where they just watch you code, camera and mic on, and sits there silently. Once you are done, if you don't get the whole thing, they just say "it's a no" then drops the call.