I grew up in a Spanish speaking country so am naturaly fluent in the lingo. I also hold fATPL etc etc, and have tried several avenues to getting a job in Spain, but have come to the conclusion that the only way you are going to get one is if you know someone who'll put you forward. Fullstop. I stand to be corrected, but that's what my enquiries have revealed sadly.
Hopefully a bit more helpful than thge above.
S