You can tell this by the code, usually the people who offsite the code have the worst syntax, worst grammar and use foreign symbols in the code unless requested

You can tell this by the code, usually the people who offsite the code have the worst syntax, worst grammar and use foreign symbols in the code unless requested otherwise. Also, after they have submitted it, go into detail with them as to why they did this, or why they did that. Tech interviews with puzzles, quizzes, and logic are just a massive waste of everyones time.