Nanny Needed For My Children - Full-time / Part-time

We are looking for a nanny 2x a week for our special needs son. Our son is autistic, minimally verbal, has sensory issues and ADHD. He currently receives speech, OT, and special instruction through early intervention, and is transitioning to a special needs pre-k. He is deeply affectionate but sometimes has trouble with transitioning from a preferred activity. We are looking for a sitter twice a week for late afternoons into the evening (we work in restaurants) preferably someone with extensive experience with special needs/autistic children.