They contacted me first via email to set up a first online interview- they send you suggestions on how to be prepared, stressing you should have supportive examples of your strengths, and to be specific and to the point. I was greeted by a lovely and effervescent young woman who asked me about my professional background, was happy for me to ask questions about them. Then she explained, that if approved, there would be a written test activity (design a whole day of activities for their boot camp) which should only take 90 mins to write up (on your own time); then the next step would be a face to face meeting with the 2 creators of this start up (as of 2023), and finally have the last "interview" as a visit to their office in Barcelona to meet the group. I hope this was useful!