The selection process started with a coding round. Had 1 hour and had to solve 2 questions. The question was a medium type question (both sliding window questions)... The first question was something like "Maximum length of the substring to be removed so of the permutations of the remaining form a palindrome". I don't remember the 2nd question. The selected peeps had the second round on the same day. It was a 4 hour hackthon round. It was really good and fun. After that, the selected students were invited for tech round and HR round on another day. The tech round was about 90mins long and had system design questions.