I applied through Campus. There were 2 rounds.. First was a simple aptitude test of 3 sections of which one consisted 4 puzzles and another consisting of essay. The second round, personal interview got postponed twice for me, and it took place for more than an hour and it consisted of describing about myself followed by puzzle solving.

Recruitment process involves three rounds. Aptitude test, Gamified assessment and HR interview. No specific preparation required for the interview. General puzzles and resume related questions were asked in interview.