I had this exact same thing happen a few years ago, with an internal employee. They had gotten someone else from the India office to conduct the interview. He

I had this exact same thing happen a few years ago, with an internal employee. They had gotten someone else from the India office to conduct the interview. He said his camera wasn't working and we didn't think anything of it. He aced the interview, even made good recommendations on the project he would be running. The guy that showed up wasn't even at a junior level. It became painfully obvious after a couple of days. Pure red flags but the highlight... - When asking for a project plan on an enterprise level project his response was "I can code all this in 3 days". - Proceeds to supply broken code. - When mentioned the code doesn't work he gets aggressive and says other people on the team broke it. - Code gets reviewed by a senior architect (Bob) from another team. Turns out code was copied from an external github. So even if it worked it would be illegal to use. - They get aggressive saying that Bob is jealous. - Bob proceeds to document in detail the codes origin, legal details and points out where the code is broken. - Bob and senior management have a meeting with the guy, where he is asked supply his original code (which he can't). Is then asked to explain exactly what the code does. - Bob puts the cherry on the cake where he finds a simple broken function that anyone junior developer could see is wrong. Asks him to explain what is wrong with that code. After that the guy got fired. Not sure if they investigated further in the India branch. But it was embarrassing all round. I'm still not sure how the imposter planned to keep the job after getting it. I suspect the stand-in expected money and didn't get it. So didn't support them.