Any way to aggregate recruiter jobs in a feed?

I'm looking to aggregate job postings (for developers/engineers) by 3rd party recruiters into one feed, searchable by zip code or metro area. I understand how to use the major job boards or aggregators like Indeed/Google Jobs, but I don't see a way to search for 3rd party recruiter jobs specifically- as of right now I'd have to pick through them one by one. Any thoughts? This is more of a data project than actual interest in applying to recruiter jobs....