Staff molto confidenziale e messo a proprio agio sin da subito, mi è stata illustrata la posizione, il contratto e la durata, i periodi di formazione dopo l'assunzione e la descrizione di una giornata tipo nella posizione ricoperta

Applied online. 3 interviews within 2 weeks, first with HR, then hiring manager and last with team member. First 2 were pretty normal, the last wasn't, I felt the interviewer doesn't want to interview me or something, questions were sometimes pretty shallow and suddenly too technical like he's reading from a list.

If the interviewer is afraid you will take his position he just wants to screw up the job even if you are not interested in the position he tries to speak as if you are interested in the job.