Looking for a native enghish Nanny!!

We are looking for a native English nanny to work in Madrid (near Puerta Toledo), from 16:00 to 18:30 Monday from Friday, to take care for 1 girl 8 years old and 2 boys 5 years old. We need nanny to pick up children from school, go to the park, bring them home, play with them and help with shower and with their homework while speaking with them in English. 

Nanny is needed from September on till June 2017, so we need someone who will stay in Madrid at least until June 2017. After the summer, is possible too to continue with the job as nanny. 

Working days Monday to Friday only while on school days (Christmas, Eastern,... off).

Salary 300€/month fix every month from September to June. September and June salary will depend of starting and ending date.