Algo Depth interview questions

First round was a Python coding round on hackerrank. 3 questions based on data structures. Second round was a phone interview asking behavioural questions, machine learning questions and from projects work experience. Third round was a take home research paper and make a presentation about it. Later one of their interviewed based on the presentation

First a coding test, second a research project test, third a presentation round, fourth a phone discussion with HR. offer and contracts finally. very fast in weeks. I applied through my school website.