Where are government contracts posted that require a clearance?

[AgaBoogaBoo]

I'm clueless about most any government job to be honest, but is there some kind of site for people who have an active clearance to search? What if they do it on a contract basis and want to bid for a project or something?

I know next to nothing about all that was curious if anyone here knew how that works. It's nothing short of a mystery to me, and I haven't looked on google yet.

 

[Zugzwang152]

http://www.usajobs.com/

 

[EagleKeeper]

Dice has a section that require clearances