Lots of rounds with long wait in between. First, it was an online psychotest. Then, a one-way interview. Followed by a business case. Lastly, it was an interview with the directors. (Meaning: months of waiting and hours of dedication) The interviewers were rude and pushy. It almost felt like bullying. The rejection letter was standard at best even though it had involved tens of hours of the participant's time. Your product sucks anyways. Clearly not going to apply to this company ever again.