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

We are looking for an babysitter to pick up our son (who will be in 7th grade) from his school in the Outer Richmond every afternoon, drive him to after school sports activities and then bring him home to Lower Pacific Heights. Most nights will be done by 6 p.m. but flexibility will be needed from time to time to work later. We would prefer a babysitter who has their own car and who does not smoke.