While you might be hiring, it was remarkably hard to find any details on job listings. (edit: I don't think I actually found any.) The closest I could find was by following many links and eventually getting a web form where I could give my contact info for joining the Digital Service.
Is there a chance you could put a more convenient link directly to your listing of jobs (or a friendly page that links directly to USAJOBS, or explains about that painful tar baby) at the bottom of the main 18F page?