Babysitter Needed - Full-time / Part-time

We are looking for a great nanny for 1 child in Alexandria. We need a nanny who has their own car, who does not smoke, who is comfortable with pets and who is CPR certified. Our son goes back to school after Labor Day M-F 9:20-12:20 each morning, so we need help a couple times a week doing pick up and care in the afternoon. I am a nurse and so my schedule varies, so we need someone who can potentially be flexible, but we can be flexible as well since we have help from my family.