Occasional Babysitter Needed For 2 Children

We are looking for an occasional babysitter (when needed) for 2 children. We would prefer a nanny who has their own car, who does not smoke, who is comfortable with pets, who is CPR certified and who has college degree. Sometimes we will need you to watch one child and other times it would be both. My older child has separation anxiety, so we prefer someone who is gentle/warm and able to handle the separation anxiety.