Definitely spend more time on it - cause it's a great idea. It's really just some design nitpicks I have.

Everything's full-screen and stretched so it seems like a ton of information thrown at you. Each posting has a top line, so you might be able to put that in a header bar of some sort, like an orange div that stretches across with an side and down arrow indicating nested or not - and maybe start out with all of them nested, that way users can really pick the ones they want easily instead of scrolling all the way through. A little more padding between jobs would be nice as well.

I like it though! Keep up the good work.