I agree with your points there, they are important things to have on lightning and nostr, and there is a risk of fraudulent behaviour if the checks aren't robust enough.

The nostr:npub1zs2a5unfcjg9m0hphvuqmhqxjlkj78srlswsc8656rcrs2422smsxd0pfe jobs board is a pretty nice idea, for sure. If new jobs are automatically posted to nostr, people who are interested could follow the jobs posting account to be notified whenever there's a new listing.