OA with LC easy problem. Zoom first round with an engineer solving some basic debugging and function implementation problems. Final round is virtual, one live coding section and then a behavioral/system design section.

In the live coding part of the final, my interviewer would not stop interrupting as I walked through my plan for a solution. He also was very condescending and seemed to be trying to deliberately misinterpret what I said. He wasted a lot of time and we got cut short.

In the system design portion, another interviewer corrected me on the use of a C++ data structure, but he was incorrect. He could not be convinced otherwise and acted extremely smug. I tried to be patient as possible but by the end of the interview it was clear that it had not gone well and he had already made up his mind.

How would you design a software system for airline flight tracking?