The process was very fast. Got first call with a recruiter. Second call - sharing my experience and described my past projects to the technical person . Third call is for 1 hour test project. Got an invitation to visit the office in Belgium. DataCamp paid for the tickets and a hotel (was very nice place). The interview in the office has a simple flow. 3 small projects 1 hour each. You should describe your choices to the group of interviewers at the end of each task.