Nanny Needed - Full-time / Part-time

We are looking for a great nanny for 1 child in Arlington. We would prefer a nanny who is comfortable with pets and who is CPR certified. We need a nanny once a week, for 4 hours, to watch our 10-month-old boy. We can discuss a day and time, I am open to adjustments. Additionally, would like someone who is open to occasionally babysitting on the weekends as needed. For the weekends we will give one/ two weeks notice.