First Round- they asked most basic questions and it looked like interviewer was mot much aware about anything latest going in tech industry. He was following simple top 20 questions from google. LoL. Second Round - They will give you a code to refactor with just 1 function in it. I implemented SOLID principles with all best practices of software development guidelines ie - DI, Loose coupling , Global Errors Handlers, Global Validation, MoQ , middlewares and made code asynchronous with best practices of dynamic programming. Response - I got that you didn’t follow any patterns and just few teat cases. (lol reviewer couldn’t understand that when u apply Dependency Injection and Implement loosely coupling what architecture is implemented) I have serious doubts on the person who was reviewing he was completely unable to understand the code .Might be old school with theoretical knowledge only. They wasted completely 4-5 hours of efforts of mine.