On the one hand, this is a nice problem to have. On the other hand, I see your dilemma. On the other hand, I think you're over thinking this. On the other ha

On the one hand, this is a nice problem to have. On the other hand, I see your dilemma. On the other hand, I think you're over thinking this. On the other hand, it's just so crazy it might work! Alright, enough of that. IMHO, I would NOT call the first start-up and ask them to be your reference for the second start-up. First, what would they say? They don't really know you yet, beyond what you've listed on your CV...and the second company already has that. Reference are suppose to tell people what a CV can't. Are you a team player. Are you punctual. Are you an all around nice guy, or girl. Also, if I worked at the first company and took your call, I GUARANTEE that by the end of the day, the details of YOUR phone call will have circulated around the entire office...and not in a "wow this guy rocks" kind of way, but more like "who does this guy think he is" kind of way. But hey, like I said....it's just so crazy it might work!