That's awful. In my experience, there are usually (at least) three reasons for that to happen - i.e. you getting rejected after a seemingly impeccable intervie

That's awful. In my experience, there are usually (at least) three reasons for that to happen - i.e. you getting rejected after a seemingly impeccable interview: 1) They already had a candidate they wanted to hire, but have some internal hiring protocol / process they must follow. 2) You and the other candidate(s) were incredibly similar, but one had to go. 3) Everyone but one senior decision maker liked you. Could have been for whatever reason. We like to think that most companies have a somewhat democratic recruitment panel, where all the decision makers get a (somewhat) equally weighted say. But some places, it's more like gatekeeper after gatekeeper...you might get passed all the previous ones, but not the last one.