English Speaking Babysitter (São Paulo)

We are new to Sao Paulo and have two children, a boy age 9 and a girl age 4. We do not employ a full time maid or nanny and are therefore looking for an English speaking babysitter to sit as needed in our Alto de Pinheiros apartment. We would pay the rate we paid in the US, equivalent to $10 an hour. If interested, please respond and we'll arrange to meet for coffee. My husband and I could really use a date night!