Interview process was not that tough but it is fun to do. I got 1 assignment then after selection we have 1 interview based on logical reasoning and then again I got 1 assignment. And after that if you are not upto that mark then they will hire you without any confirmation of internship, so it works like a evaluation process but you'll be working for that company without any stipend until and unless they get satisfied. Co-founder was not at all friendly, he expected me to read his code under 4 hours and when I told him that I had my life and I was working for 1 hackathon then he started scolding me and said I lost my opportunity. At the end he gave me 1 more opportunity when I apologized for nothing and then later on 1:1 Hangout I declined the offer as it was not worth working with bad environment.