I'm a freelance developer so I assume I potentially factor into your audience in some way. I also encounter people who need developers so am a potential source of referrals.
To me "the top choice for entrepreneurs, designers and businesses to hire world-class coding talent" is an grandiose, empty and (certainly this early) probably untrue statement. I don't like to deal with people that make statements like that so it makes a negative first impression on me.
It also makes me ask the questions:
* "top" Compared to what? In what way?
* How do I know the coders are "world-class"? Is there vetting? Guarantees?
Possible replacement:
"CollectiveJam helps entrepreneurs, designers and businesses to hire coding talent."
I don't know enough about your product to be able to say what a reasonable and accurate claim is. :) If I knew more I could probably extend that above to say "...by something something somethinging the something."
Then again--I'm not a copywriter. :)