I had cleared the National Qualifier Test 2019, both round 1 (Ninja) and round 2 (Digital) and was called for the interview in Kolkata. The interview day was a long process, we had to check in at around 8 in the morning and show all the original documents and certificates for the verification and after every document was verified, they allowed us to sit in a room and called us one by one. The interview panel had three persons, Technical Interviewer, HR and MR. The interview is conducted simultaneously. The actual interview took around 50 minutes for me. The wait time after document verification till the interview call was around 1 hour 30 minutes, but for some people it exceeded 4 hours. The interview was combined for both Ninja and Digital. The designation varies upon the candidate's knowledge on ML and AI related programming.