Qualcomm

45-minute phone interview. First round: Simple coding questions to check your knowledge of algorithms. One coding question to add big integers in C++. Easily doable. Smooth interview process with a good team.

They had a phone interview with one of the lead engineers first, and then a face-to-face interview with four rounds. The interview was pretty tough, from technical architects to managers, but they stuck to the resume mostly.

The questions were all technical, related to C, data structures, embedded systems, and RTOS.