The interview was very well organised. It was indeed a positive experience, dealing with smooth and kind communication. Also an added plus is to have the opportunity meeting and greeting board members including the CEO of the company. I marked below the interview as "difficult", not because the interviewers are difficult to deal with, but due to the seniority of the position on one hand, and the length questionnaire to prepare in advance (20 pages approximately if to be well done). Overall, for those who land an interview, it is already an achievement.