Amazon Engineer interview questions

Very intrusive but insightful with regretsFreeRTOS kernel provides a portable abstraction layer, task scheduling and interprocess communication (IPC) mechanisms. The main IPC mechanism in FreeRTOS is a concurrent queue: a circular buffer data structure that tasks and interrupt service routines use to exchange messages.

initial phone screening then i didn't hear anything back. Not a huge amount of insight into this interview process. Recruiters were polite and I was given a good understanding of the company