I applied online. The process took 2 weeks. I interviewed at CERN in Oct 2025
Easy interview
Application
I applied online. I interviewed at CERN in Oct 2025
Interview
A very relaxed interview with two interviewers present. With them firstly asking you to describe yourself, then having you answer some coding questions. Followed up with the opportunity for you to ask questions.
Interview questions [1]
Question 1
Answering some simple LeetCode style questions in either Java or JavaScript.
My recruitment process for an Early Career position has been a great experience so far. The interview is more conversational and human than it can be in other places. It feels like there is real curiosity to know applicants, their experiences and interests, and to share about life at CERN, which I really appreciated. The process is also very respectful of candidates' time, since it tends to be quite fast, with just one interview. Everyone I have been in contact with so far has been very nice and responsive.
Interview questions [1]
Question 1
Talk about my experience, my technical preferences, etc. Open up space for my questions as well.
1. Technical test
HackerRank (9 questions, 60 min)
2. Remote video screening
25 minutes with 3 interviewers (section leaders and senior engineers).
Basic questions and one technical question about the previous technical test.
3. Final interview
* 45 minutes panel interview of 4 interviewers (recruiter, section leaders, and senior engineers)
Required to prepare a 7 minutes presentation about career history and then answer behaviour questions from interviewers.
* 30 minutes team interview
Meet the team, brief introduction from both sides with Q&A.
Overall positive interview process followed by a job offer.
Interview questions [1]
Question 1
Give an example of a time when you successfully changed other people's opinions by persuasive arguments.
