Babysitter - Full-time / Part-time

We are looking for on-going childcare for 2 children and 1 teen in Denver. Childcare is only needed for my infant as the other 2 children are in school and programs. The exception to this is Tuesdays as we are needing care into the evening. We would prefer someone who could help out with light housekeeping and homework help. We would prefer a babysitter who has their own car, who is comfortable with pets and who is CPR certified.