The interview process started with a recruiter contacting me with the details of the position and a time slot for a phone interview. The phone interview was pretty simple, asked a few questions about RTOS : mutex, semaphore, stacks and heaps. Also asked a C question: what will be the address of an integer pointer after increment of the pointer variable directly. Once I cleared that, the recruiter confirmed a time slot for an onsite interview. The onsite interview had 7 rounds including a HR round which usually lasts from 9-5pm. The HR round just includes some basic questions about your current job and your salary expectations. The next 6 rounds included interviews with director of engineering, senior staff engineers and staff engineers. The questions were pretty basic. Mostly in C language such as strcpy, strlen,bit counting etc...