Hi Rita,

It will depend on the state that you are hiring. We hire in Texas, and are successful with advertising on Indeed, which luckily connects to our hiring system too.

We do find it difficult to reach out to contact details, the challenges we found is UK / International numbers are blocked when calling the US. Reaching out to them via email and setting up times, and making sure candidates don't have international calls blocked helps.

Good luck.

thanks
Claire

Employment law varies greatly depending on states.
I've heard that getting an SHRM/SPHR membership gives you access to useful resources.
Good luck!