Marta, busca niñera en Bilbao

We are a Spanish couple. We have two twin girls who are almost 5 years old.
We have lived in Switzerland, but at the end of August we returned to Bilbao. We live Begoña district, very close to the center (15 min walking), close to bus and metro stops.
We have had au pairs in Switzerland (from Germany and from Czech Republic) and we have been very happy with the experience.
We are looking for a girl whose MOTHER THONGUE IS ENGLISH. Naturally, at home we speak Spanish, as we are from Spain. We speak English, German and Italian as well.
The time with the girls will be take them and pick up them from School (10 min walk), and play and talk to the girls, while their parents are working.
The girls are going to go to school from 9:30 to 15:00, they are going to have lunch at school. They love to play, go outside, read stories, talk, sing, dance, swim, ride on bikes ...
No formal classes are required, you should simply speak and interact with them in English only.
We can adapt to the availability of the baby sitter, we would like at least 4-6 hours per week.