Looking For Nanny In Portola Valley

We are looking for a nanny for 2 young children (ages 2 and 5) starting late February or early March. Both kids attend school until noon, so the position starts around 11 a.m. until 6 p.m. We are very open to increasing the hours if desired. The house is on a hill so the caregiver must be comfortable driving. We would prefer a caregiver who has their own car, who does not smoke, who is comfortable with cats, and who has a college degree or is currently enrolled.