Graduate Mechanical Design Engineer applicants have rated the interview process at CERN with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 69.5% positive. This is according to Glassdoor user ratings.
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The interview was very casual and began with a brief ~5-10min presentation giving an overview of the engineering department and a variety of projects at CERN. The two interviewers were friendly and engaging, allowing the candidate freedom and time to speak about any aspect of previous education/experience of your choosing. Offered a healthy back and forth conversation before finishing with a short technical quiz.
Interview questions [1]
Question 1
I don't recall a specific 'interview-style' question, as the process was quite laid back and more conversational. Worth familiarizing yourself with your previous projects/experiences to chat about.