Nanny Needed For My Children

We are looking for a great babysitter for 1 child in Houston, age 15 but has some special needs so is age 5 mentally. Need someone to be home when he gets off the bus, be willing to take him to the park or play outside with him occasionally, and help with light housework when needed (dishes, vacuum, clean counters, straighten up). We have a dog, larger breed, well trained. Seeking someone with a car.