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

We are looking for a nanny to care for our two boys (age 2 and 4). Responsibilities would include picking and dropping them off at school. We are looking for care two days a week for 12 hours a day. We have a dog at home, so someone who would be comfortable being around him (all he does is snuggle and bark and deliveries).