Aupair 4 days a week/ Madrid Chamartin

Hi, we are a Spanish family with 3 kids, 2 boys (6, 4 years old) and 1 girl ( 2years old). We are looking for an English speaker aupair to help us with pick ups from school and mainly to play and do homework with the children at home. Ideally from 4:30 -8:30pm but we are flexible. We have a live in nanny to help us too but we want someone speaking in English with them. Thanks a lot Montse