Glassdoor users rated their interview experience at CERN as 100% positive with a difficulty rating score of 4 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Knowledge Transfer Officer and rated their interviews as the hardest, whereas interviews for Knowledge Transfer Officer and roles were rated as the easiest.
The hiring process at CERN takes an average of 14 days when considering 1 user submitted interviews across all job titles. Candidates applying for Knowledge Transfer Officer had the quickest hiring process (on average 14 days), whereas Knowledge Transfer Officer roles had the slowest hiring process (on average 14 days).
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.
I applied online. I interviewed at CERN in Apr 2026
Interview
There were 3 people at the interview.One of them was a supervisor, the other two were engineers I would be working with.The supervisor didn't ask much, but the other two pressed her a lot.
Interview questions [1]
Question 1
Describe a problem you encountered while working in a team and how you solved it.
Tre chiamate, di cui due asincrone, con vari team che lavoravano al cern in inglese, con varie entità del posto di lavoro, mi hanno spiegato la posizione che sarei andato a ricoprire