Babysitter Needed

We are looking for a great nanny/babysitter primarily for our two youngest children (2. 5 years and 6 months). There will be a few hours during the day (no more than 2) where my two oldest will be home from school. These days may vary as we are both nurses. My husband travels and I work from home. I work M-F but his schedule varies. We would prefer someone who could help out with light housekeeping, has their own car, who does not smoke, who is comfortable with pets and who is CPR certified.