Ruby on Rails Communities

Hello guys. Could you recommend me some popular RoR communities/groups/forums across the USA? We are a startup and looking for developers, looking for a place to post a job. Thank you!

Hey there! I run a slack community and there are a lot of ROR devs there. I’ll shoot an invite if you want.

Yes, please! It would be great.

You can post job details on #job_offers_only