You will find it hard to get a job abroad unless you have some experience. Most good schools require at least two years. There are no Mathematics jobs advertised in Spain this week on TES. Try www.hays.com as well as setting up a TES email alert for jobs in Spain in your subject. Pay is not great and some schools are stuggling at the moment. A lot of schools will advertise on their own website, do a google search for schools in Spain or the area of Spain your are most interested in.