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

We are looking for a responsible and energetic part-time nanny for our four girls (13, 11, 8, and 4). Responsibilities would include pick-up from bus stop and nearby preschool, facilitating homework, playing with children, assisting with transportation to activities, occasional light meal prep for children. Must have valid drivers license and be authorized to work in U. S. Our house is 15 minute walk to the metro.