For IT, Mark yourself looking on LinkedIn, follow up with the swarm that messages you. Focus one ones that use the actual company email, followed by ones that at least say what company it’s for (many won’t say). Be upfront about salary/location requirements, but double check about them in the interviews.
Another middleman who is "professional" at finding middlemen, of course.
For a fee, I could get you in touch with a few people who are able to find middlemen
Buy my book: "Finding middlemen for loosers"
Very clever. But rather than optimizing towards cleverness, you could optimize towards directness and say "try them out and develop relationships over the long term." It's not as cute and clever of a phrase. It's unfortunate that the truth isn't cute and clever.
Or maybe it's fortunate? You know, I actually think it's fortunate. I'll let the cynics who like being cute and clever keep their misfortune, and I'll keep my boring, ugly, successful reality.
I have met the owner of https://www.findmyprofession.com/ a few times and he seems like a good guy but I haven’t used their services. They claim to be such a middleman.