The first round consists of a technical test, you have approx. one hour to answer on paper. Then, the interviewers ( I had two) go through it and discusses with you. Then there is a short interview with the manager telling you a bit about the position and the company.
If you pass, the second round is a 24-hour programming excercise. At a predefined date and time you get an email with the assignment and you have 24 hours to deliver the solution.
If you pass, the third round is a bit technical interview with director manager from France. An HR interview follows. Here I failed, they preferred another candidate.
Although they offer competitive salary, what I was surprised about was the fixed working hours from 9-6.