Use job listing (open) for posts that discuss a specific job or jobs that one or more organizations are hiring for.
You can also find job listings on the "Who's hiring?" post.
After a request has been completed, or if it's no longer relevant, downvote this tag and add job listing (closed). This can be done by anyone, not just the original poster.
There are also job boards:
On the other side of things, there are some EA talent directories:
You can also find more ways to get involved on the take action page.