Almost every Stack Exchange site now has a meta. It seems that http://careers.stackoverflow.com should have one too.
PS: I'd ask in it: Why not include other Stack Exchange sites like https://gamedev.stackexchange.com/.
There are three main reasons why Careers doesn't need its own Meta:
Meta Stack Overflow is sort of a catch-all for these one-off sites including Area 51, Data Explorer, StackApps, and the Stack Exchange home page (including the Reputation Leagues).
So any questions (support, discussion, bug, feature-request) you have about Careers can be directed here.