After I applied, I got a phone call from HR recruiter for my first interview. I had my first phone interview with HR which took 45 min, they asked me my prior experiences and projects and also my salary expectations. Second interview was with the manager, it also took like 50 min/1 hour. Again, they asked my projects, challenges and risks I took. Last interview was in Luxembourg, I was invited to Luxembourg and had series of interviews with HR and 3 different managers, in total 4 interviews in a row. 2 days after this interview, they told me that I will get an offer and 1 week after I received the offer.