Altacjobs Project

I am interested in building a membership-based jobs website but for a niche job-seeking audience (PhDs in the Humanities & Social Sciences transitioning out of academia). Some example of things I'd be looking to emulate (just in terms of basic structure) are idealist.org or hollylist.com. I'm hoping that once it gets up and running it is the type of thing I could update myself with new job ads.