Part Time Nanny Needed for my Children

We are looking for an after school nanny for 1-2 children in Centennial Piney Creek area. My oldest finishes school at 2:40 and my youngest is in daycare where he can stay until 5 p.m. We live walking distance to the school. We would prefer someone who could help out with light housekeeping and homework help. We would prefer a nanny who does not smoke, who is comfortable with pets and who is CPR certified.