Applied online through their website. Was contacted after more than one month (reasonable for a company this big).

1. First phone interview with a senior engineer. Everything went smoothly; we had a good chat about the position and the roles.
2. Second phone interview with another engineer from a different team. Again, everything went smoothly.
3. On-site interview. Met the team in Europe and had a nice chat with them. Everyone was friendly.

The overall process was very smooth and very well handled by HR. Overall, a very pleasing job interview experience.

All questions were deeply technical and related to my position, with no whiteboard coding, quizzes, complex (and mostly useless) algorithm questions, or other useless stuff like that. I always appreciate a job interview where they try to actively assess your skills, and not how much you remember from your university degree. I hope more and more companies follow this. Thanks, Qualcomm.

Received a very good offer, but I did not accept because I had another one which was more on track with my aspirations as an engineer versus a researcher.

Cannot disclose questions.

Just know your stuff about engineering and security.