Nanny Needed - Full-time / Part-time

I am looking for someone to pick my two children from school, Monday-Thursday at 230pm, and watch them until 6 p.m. I do have a dog in the home, a 30lbs Australian Shepherd, he is well trained and previous experience with dogs is not required. My children are 8 and 6 years old. My 6-year-old daughter, was diagnosed with Non Verbal Autism when she was 4, and will need the most attention during these times. She is very friendly, loves to parallel play with other children, but will need extra attention. My 8-year-old is very self sufficient, and is very much easy going. I expect to need help with this schedule for the next 6-8 months, but could extend up to a year.