It's not professional for a mentor to take out his frustration on employees. I'm not saying I never get frustrated with poor quality work, but I don't see it as

It's not professional for a mentor to take out his frustration on employees. I'm not saying I never get frustrated with poor quality work, but I don't see it as helpful taking out that frustration on someone. Better things I can do: 1. Figure out how to inspire quality with positive reinforcement. 2. Eliminate blockers to quality. 3. Automate quality checks so I'm not even reviewing code unless it already passes a certain QA level. Sometimes people are broken and that's fine. Let them go instead of beating up on them. But very often it is the processes that are broken and you should be fixing those instead of trying to fix people.