Did a quick search for “job postings” and found this post: https://leminal.space/post/26410981

It links to https://hiring.cafe/

Surprised it wasn’t recommended yet: Rowenta

Others have summarised lemmy, lemmy.world and its use quite well already, so i just looked for the connection to perchance:

I checked perchance.org and they mention that they have a community on lemmy where one can ask for help or share creations. (Similar to the “No Stupid Questions” community you posted this to)

They specifically link to this community: !perchance@lemmy.world (https://lemmy.world/c/perchance)

So no real relationship other than that they use Lemmy as a platform for their users to exchange on and use lemmy.world as a “provider” for their community space (or “forum” in older words)