English teaching job needed!

Hola, I am currently working as an au pair teaching english to a wonderful little girl, but I think it's time for me to do something else as the hours don't suit me! I'm looking for an english teaching job in Madrid, I'm a native english speaker (american english) - but I'm not TEFL certified. I'm currently doing a business degree in Copenhagen, but as for now I live in Madrid. I have experience in teaching kids english from the ages of 7-9. I'd like to teach in the mornings/midday, preferably children.