Round 1 was hosted on HackerRank where I had to solve two coding questions and one data science question. Next was a telephonic round with a consultant which lasted for an hour. This was a difficult round where I was asked questions based on the entire data science pipeline. After that, I was called to the Gurgaon Office where I was interviewed by the principal data scientist as well as the principal consultant. This round was followed by a few hr rounds and a mandatory aptitude test. All in all, it was a really smooth process.