Well, I'm afraid I bring you bad news. The science panorama in Spain is depressing, specially next to the USA.
A friend of mine is a biochemist, he worked for 5 years for a university. He was desperate. No equipment, no investment, no interest at all. The only way to survive is teaching. Salary is miserable.
Now he is working, guess where? at Berkeley Univ., CA.
He earns $30000, way more than he did here, but with the increasing euro value he is now starting to worry about the future, he wants to join a private company.
You should try in the private companies, being from USA it should be easy for you to get a job...but don't expect great researching programs.
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