nanny for 2 childrens

We need a person from 1:00pm to 3:00pm for look after two childrens. They are 4 and 7 years old. The work is in Madrid, in Carabanchel Alto zone. Looking for a english-native (or very high level of english) nanny in madrid (spain). He/she must pick up the kids from the school at 13:00 (take a bus) give them lunch (not cooking) and take them back to school (by bus) at 15:00. Must speak fluent english & enough spanish and have references. External – 2  hours/day - Monday-Friday. 
From now till june (may be more)
We offer 200€ and food