Babysitter Needed For 2 Children

We are looking for a babysitter/nanny for 2 children . We would prefer someone who has their own car, who does not smoke and who is CPR certified. There are no pets in the house. Primarily would be Thursdays and Fridays with a few Wednesdays. On Fridays, it would only be for 1 child as the older child goes to school. One parent does work from home so would be there if needed. We do need someone who has experience with both ages. The younger child (14 months) has a schedule for naps that she follows very well making her day predictable and her temperament pleasant and easy going. The oldest is outgoing and loves to build and pretend play. We are looking for someone who can balance being a playmate and help control the messes of his grand skyscrapers while we are at work. Firm on rate.