Those asking about jobs in Caribbean.
Here is a link to some of the larger outfits.
However,be advised that there are a lot of furloughs still waiting to get back in.
http://www.caribbeanalpa.com/directory/index.shtml
(look under hiring requirements)
The smaller operators do hire non-nationals from time to time when in a bind, and that is where your best bets are.
In terms of licences, preferences vary but generally JAR has least conversion hassle, then Canadian, then FAA.