What's the problem?
Stack Overflow is a big draw for developers. That's what companies want the most right now. Even the systems administrator jobs are in developer-driven or dev-focused firms. There's no lack of systems administration jobs on Careers.SE, though.
I can attest to the appeal of the site for hiring purposes across disciplines. When hiring, I had my organization post here. I've also received at least seven job offers/opportunities through the sitehere since I established a profile.
My last three full-time positions were found via the site. (no comments about my short tenures...)