I had two interviews with the home institute (HI). The first one with HR. It was mostly about getting to know me, my professional path and my profile, understand what I was looking for and also inform me about the company and the project. The second interview was very technical, with very specific questions. It was really about being honest and fully transparent concerning my knowledge, my skills and what I had done so far. They also explained me the contract conditions and benefits.
After that I had a third interview with the hiring manager of Iter Organization (IO). It was also a technical interview.