Got a response within a week after applying online. Was then set up for a phone interview. The phone interview was done by a very senior person (with 30+ years in the industry); the interviewer was very cool. He asked mostly from my resume and a few C questions. After that, I got an onsite interview set up within a week. I had 4 one-on-one interviews. The 2 interviews in the morning were easy; I was asked mainly simple C questions and about my projects. The afternoon interviews were tough, with questions like traversing a binary tree without recursion and algorithms.

Questions related to RTOS were asked, and I was tasked with writing a solution for the producer-consumer problem.

Bit manipulation questions included:

• Writing a macro to check if the nth bit was set.
• Writing a function to count the number of 1s in a variable, and discussing the complexity of the implementation.