part-time babysitter

We are a French family of 3. We moved back to Paris last year after spending 4 years in Seattle. We are looking for a native English speaker to look after our 7-year-old son after school from 4:45 to 6:45 PM Mondays, Tuesdays and Fridays, from 3:15 to 6:45 PM on Thursdays and from 12:30 to 7 PM on Wednesdays for the whole 2015/2016 school year (September '15 through June '16).
 He is a quiet, well-behaved boy and he speaks fluent French and English.
 The job involves picking him up at school (in the 7th arrondissement), bringing him home by subway (20-mn ride to Porte Maillot), giving him a snack, helping with his 2nd-grade homework, playing with him, running his bath and preparing his dinner.
 We live in a 2-bedroom apartment in the 17th arrondissement, not very far from the Champs-Elysees and the Bois de Boulogne. We can not provide accommodation.

We are offering a net salary of 10 euros per hour, 16 hours a week.