Nanny Needed For My Children - Full-time / Part-time

We currently have a full time nanny that we love, but are looking to add an emergency/backup nanny to help out if our current nanny is sick or needs time off. We are looking for someone who would be able to help out on short notice to care for our 1-year-old. We would prefer a nanny who has their own car, who does not smoke, who is comfortable with pets and who is CPR certified.