I'd like to add that it doesn't have to be a start-up at all, it could be any small company. Where I'm working, I started as a (paid) intern, doing some resear

I'd like to add that it doesn't have to be a start-up at all, it could be any small company. Where I'm working, I started as a (paid) intern, doing some research and just seemed to stick around. I would occasionally sit in on meetings and training just to see how the other parts of the business worked.