worst experience of my life, had 7 rounds and then they told me they would proceed with the offer and later rejecting me after ONE MONTH. I did tests, business cases, inverviews etc.

Resume walk through and relevant experience, with time for questions at the end. The problem was that the metrics they use to value current company is latest valuation, even if things like GAV are more relevant. It is exactly 30 minutes and they will cut you off during a sentence if it goes over a few seconds.