I am currently a 737 captain for a US carrier. I'm 32 years old, and my personal life is taking me to Europe. I'm applying for a Spanish passport through my parents so the legal right to work in EU is being taken care of...
Just one piece of advice (out of hands-on experience):
DO NOT TOUCH AND I SAY IT AGAIN
DO NOT TOUCH A SPANISH LICENCE EVEN WITH A BARGE POLE!!!
Awful and INSANE 18th-century-like bureaucracy, national aviation authority arrogance off the scale and poor command of English. Stay away from those clowns, get an Irish licence .
Good luck
DK