Technical screening was directly and only coding. Didn't ask intro or anything. Try to explain theory concepts in between coding, they seem to like it. Basic C question, pointer arithmatic, bit manipuation etc,

The role description was pretty vague, listing only desiring a number of years of C++ experience, an embedded systems background, and strong programming/debugging skills. The recruiter moved me onto the first technical screen with the hiring manager. I was told that the main objective of this screen was to assess my coding ability. During the technical screen, which was friendly and professional to be fair, I was able to pass the coding question and come up with the correct solution. I was also asked technical questions. I knew the answers to some, but others were, imo, extremely niche and domain specific, and my current experience didn't cover those. I was then ghosted for three weeks. I had to ask for an update from the recruiter, who finally informed me that the team didn't find me to be the right fit. It's clear that the recruiter and hiring manager don't actually agree on what they want. The process ended up feeling like a huge waste of time.