There were 2 rounds 1st Round : Questions from ML, Deep Learning and projects have been asked by their Senior Data Scientist. Some of the questions are : 1. What is vanishing gradient problem? 2. What is PCA ? 3. What have you done in your recommendation project? Round 2 : This was taken by their CEO and he is very fluent in statistics. Some basic statistical questions were asked and after that some formal HR discussion took place.