Qualcomm

The phone interview was quite detailed, with numerous questions about C and networking. The level of detail required me to draw diagrams on paper to fully comprehend the questions. The in-person interviews were thorough and included: * C coding *

Applied through a recruiter. The on-site interview took around 8 hours. Most of the questions revolved around aspects of the C programming language, as well as security vulnerabilities in the Linux kernel.

There were three technical rounds. The first one was to implement a BST from scratch in multiple stages, similar to the challenges on Codesignal, without any autocompletion. The second round was also related to BSTs, where you needed to find the ri