Babysitter Needed for my Children

We are looking for a great babysitter for 1 child in Orinda. Care is required after school from 3. 30 p.m. to 6. 30 p.m. every alternate week. We would prefer someone who could help out with light housekeeping. We would prefer a babysitter who has their own car, who does not smoke, who is CPR certified and who has college degree.