The process was kind of long with 2 rounds of technical interview after an online coding assessment. The first round was over the phone and it was through an online coding portal that the other person can see you type. It was a basic tree traversal question. The third round, which was after that one was a systems design question which kind of threw me off guard since I did not know they would ask system design topics.

Find the node left of a certain child node in a tree.