Babysitter Needed for my Children - Full-time / Part-time

We are looking for great after school childcare for 1 child in York, PA to get her off the bus and be with them until Mom gets home from work. There is potential for a younger sibling (1yo) to be there and start time could vary slightly if thats the case. We would prefer someone who could help out with homework help. We would prefer a nanny who does not smoke, who is comfortable with pets and who is CPR certified.