It was a 4 step process : Written round, then 2 sets of technical interviews and at last an HR interview

As far as I believe I did well in written exam because I was able to solve all 3 coding questions and performed fairly well in aptitude too. In the interviews too I was able to answer all the puzzle questions as well as questions related to my projects. I got stuck in one of the coding questions but I somehow managed to give an answer. The interviewer was very friendly and this was one of the best interview experiences of my life.

Written round was paper and pen examination : We had an aptitude round ( difficult) and then 3 coding questions were asked: 1st one was an adhoc problem related to sorting, 2nd was from binary tree 3rd was a standard DP problem ( LIS)

After that in technical interviews they asked me a few puzzles (egg dropping puzzle is the only one I can remember), some coding questions and also a few questions related to my projects which were all in machine learning

HR round was pretty easy, they just asked me about my preferences regarding locations, night shifts etc and my strengths & weaknesses.