Total of 2 rounds.
Round1 - IQ games (extremely difficult, video & audio proctored) + video interview (easy, the usual questions).
Round2 - final assessment (on the spot case study presentation followed by half hour QnA, then a panel technical/situational interview).
I know a lot of who applied for this position and most got cut in the 1st round. The IQ games are really the toughest I ever had to do.. not much you can prepare for it.