Initially i was asked to introduce myself. Then he proceeded ask me a bit about my resume and project. I was asked to go in-depth into one of the projects and explain it's working and asked some questions about it. In my expense categorization app i had used xgboost algorithm which he asked me to explain. He asked one simple dsa question . Given n find the nth fibonaci number using recursion which i was able to do in a couple of minutes. He asked a lot of questions about OOPS and asked me to write a code in any language that shows the major concepts of OOPS like encapsulation, polymorphism, abstraction and inheritance. Since i didn't revise OOPS before the interview i was not able to fully answers these questions. He also asked a few behavioural questions even though this was supposed to be a purely technical interview. In the end he asked a logical question. Given 2 jugs of capacity 5 Litres and 3 Litres how can we measure 4Litres. I was able to solve it without much difficulty.