I would say sometimes there is a fine line between arrogance and confidence. I sometimes try to tackle engineering problems, that may be too large for me to tackle by myself. But that is because I want to challenge myself, and prove to myself what I am capable of. Perhaps this is arrogance, perhaps this is just believing in yourself and your capabilities.

When arrogance becomes problematic is when it impacts your ability to work with others. The best type of person is someone who can bring others in to work with them, praise the people they are delegating work to. And share the success of a project, with those vital team players.