They fired some pilots a few months back, I was told the cause was that they merged with Clickair and reduced fleet after the merger.
They are suposed to receive 6 more A320 soonish, that could mean some hiring will take place when the airplanes are delivered.
AFAIK their ops manual is in english, and there is no need to speak spanish, there are/were some french Capt. and F/O´s working for them.
Obviously it would be a good thing to learn the lingo if you plan to stay for some time.
in any case I wish you good luck.
LEVC