External Au-pair

We are a family of 3 members, with a 5 years son. We are looking for a serious boy or girl from to pick up our son at the school and to take care of him during 2 or 3 hour, 4 days per week (from Monday to Thursday), to prepare the afternoon snack, play, read, to make handicrafts and so on... everything in English and/or German. 
The school is in "Las Tablas" neighborhood and our house is in Sanchinarro. We would like to start possibly in August or September and we need continuity during 2012/2013. 
If you are interested on this task, please contact us in this e-mail address: beatriz.celta@gmail.com or in the telephone number: 619879630