The first round was a riddle round. Bunch of brain teasers were asked; pretty easy. The next one was a technical one where they asked a bunch of questions on Pandas on Python. For example, they gave a dataset and said like group it on this key, perform pivot on these columns etc. The last round was with the founder and it was extremely inappropriate. It started off as a behavioral round, basic questions about myself, work ethics and expectations, then suddenly shifted to issues in my personal life. His justification for asking these questions were whether I would crumble in a "high pressure environment".