And there are technical ways to find the asshole. Send them some bad code for review and see how they review it; ask them to work with the author to get it merged. (Enough code review happens in open-source projects over email&#x2F;GitHub, over text, with pseudonyms, that having it be anonymous is entirely realistic.)<p>Alternatively, keep an eye out for asshole behavior -- to any employee, not just those on the same team -- during the first few weeks, and be willing to fire.