I have 2 interviews and both were in a similar format. The interview was an hour long. first 20 mins: about my research and background. next 20 mins: questions about ML/AI last 20 mins: coding problem

I got a call from the Alexa team. There were 2 rounds. Both rounds had basic machine learning questions related to spam email classification and other basic stuffs. In the coding round, one question was from tree (Evaluate Expression) and another one from Linked List (Add two numbers).