Val74, welcome to our ALL SPAIN Message Board!
With all those credentials you should be able to fetch a pretty good salary - 20,000 Euros per year at least!
This is probably half to 30% of what you'd make in the USA, though.
We have a number of message board members who work in "informática" who can surely better advise you so I hope they see your thread. Don't expect much from salary and job opportunities in Spain compared to those in the USA. There are lots of people in Spain, Spaniards, who have degrees in these things who can't find work.
Take a look at places like
http://www.monster.es/ to get an idea of what's offered.
Best of luck! If you can improve your Spanish to near fluent you'll have more of it (luck, I mean).
Saludos, MadridMan
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