2 stages of interviews. First stage is screening, which is 15min long online interview. Second stage is on-site interview, which is 1 hour and intense. You have to do a 10-minute presentation based on your background. For such entry level role, they look for Einstein (who already knows everything) or a robot may be :)

The interviewers were very nice and every understanding and patient during our online interview as I had audio/sound issues at the very beginning. The initial interview was about 45 minutes and mostly asked about my cv and some general questions on team-work, why I want to work there, etc. Second interview was about an hour or so with the same interviewers plus another person from the company for which Avantor was subcontracting. This interview was a bit more indepth on my experience and a general discussion of what the role would involve.