I got my first bay area job through Triplebyte -- they were pretty perfect for me being able to demonstrate technical ability without a deep resume. Their process has gotten more cookie cutter over the years but the resume-blindness might be an asset in OP's situation. They're also much better positioned to give feedback on why you're struggling in interviews than an HN thread.

I'm not sure. Most of the ones I've talked to have contacted me on LinkedIn or by email, and I'm not sure how local they are/aren't to my area.

Now that I think about it I'm not sure how to actually seek one out otherwise... you might attract them by putting buzzwords on your LinkedIn? It probably isn't too hard to Google for them either

Googling just returns the sites that have won the SEO game. While it will return results, it's not anywhere the same as personal recos/warnings from like minded people. At least it might help with picking something from a search result. I might even put more weight into HN recos over something like Amazon reviews, maybe ;-)

I've had pretty good experiences with Hired before. Coming out of a product consulting background, I wasn't sure I was going to have the requisite experience to transition to an in-house role, but they found several leads for me and I ended up landing a gig with a significantly higher starting salary than I expected.

I have had good experiences with Aerotech. Really nice people who listen to what you want and try to find it for you.

I get contacted by them through linked in. They probably pay to search people with certain resume attributes, and then just spam email them in a numbers game to try to put credible candidates in front of their clients

Vettery, Jobot, Triplebyte