First round is the HR screening with casual interaction, getting to know the interviewer and the interviewee, sharing info about the company, your personal profile. The 2nd round is the coding challenge to be solved within 7 days. The 3rd round is the code walk through of the coding challenge and technical interview together F-to-F. The last round is the leadership interview wherein you are asked few behavioral questions and asked to solve an online MCQ test of similar questions.