Nanny Needed For My Children

I need occasional child care help once or twice a week. My boys would need to be picked up from school between 3:30-5:30 and brought to their home. I will be working nearby until 8, but on occasion it could be as late as 9 p.m. While watching them they would need to be fed, and reminded to do homework. We also have a large dog, my oldest son can take care of the dog. The days would not be consistent as my schedule rotates and their dad is home often. I would like someone that can be used regularly and possibly on the weekends sometimes too.