PART-TIME (afternoon/evening) Nanny With Car Needed In NW

We're looking for a PART-TIME nanny to help care for our two kids (4 yo boy, 9 yo girl) in Northwest DC for approximately 10-15 hours per week. Monday - Friday we need someone to pick them up from a bus stop in the neighborhood (approximately 5:15 p.m. M-Th, approximately 4:15 p.m. Friday), bring them home, and prep/give them dinner, baths, etc. until I or my husband come home around 7 p.m. We will provide car seats. We would like someone who can help out with light housekeeping (kids' laundry, dishes, etc.) We have a cat, so prefer someone who isn't allergic. Bonus would be someone with a flexible schedule who could provide full-day care on occasion. If you want longer hours, we'd be open to a 3:15 - 7:15 p.m. schedule, with pickup at school instead of a bus stop in our neighborhood.