HN seems to be a really funny place for this question. You do not see many “Can anybody recommend a JS developer?” style questions here and monthly “Who is hiring” thread seems more appropriate for this. Disclaimer: am professionally a PCB designer/EE for last 22 years.
It doesn't seem that weird precisely because so many people here are in software, rather than hardware. My suspicion is that the median HN reader probably knows a few JS developers, but PCB designers are few and far between in software shops.
Some of the responses surprised me -- I would never have thought about using Fiverr, for instance. I've gone there for graphic design, HTML/CSS/JS, and even some full-stack work, but it never occurred to me to hire a PCB eng there. No reason, just not something I'd looked for before.