CERN Mechanical Engineer interview questions

The interview process was good. I have been asked questions from the head of the department and the other supervisors. The second part of the interview were technical questions, to determine my level of knowledge.

I applied on the CERN website. The required documents: cv, cover letter, motivations, list of projects I was involved in. Pretty exhaustive background check - I spend several days preparing my application. I was shortlisted (~8 persons) and have been "interviewed" online. I had to login into a special platform and record my answers for videos prepared previously by the workers of the section I was applying for. About 6 questions, mostly non-technical - rather about my motivation and approach. Two weeks after, I was contacted by the HR manager and told I was not selected due to overqualification (rather courtesy, I hold BSc only).