I applied online. The process took 6 months. I interviewed at IAEA (Wien) in Jan 2020
Interview
applied online and 3 months later I got an interview. The selection panel includes the hiring manager, future supervisor and one HR staff. The interview took around 1 hour. After the interview, one month later I got the informal offer and it tool another month to gether the formal offer.
Interview questions [1]
Question 1
they mainly ask technical questions for consultant positions and especially one question for nuclear-related technology