Ask HN: How to find users (developers, DevOps) for paid market research?

While developing an idea for a side project, I’d like to talk to potential users that my service will be targeting. In my case, those users have primarily dev/devops duties.

How do folks here / very early startups find people for interviews?

I’m happy to pay for the interviews ($40 or more for one hour?) but I don’t know where to look. I tried running a Reddit ad and posting in a related Discord but so far, no takers.

(I’m specifically making this Ask about the process of finding users - I’m not recruiting people here in a sly way) :) Thanks