Babysitter Needed for my Children - Full-time / Part-time

I have a 7-year-old Autistic boy. And high demand 5-year-old girl. Im looking for someone to come to my house during the day while I am here, also sometimes be here alone with them while I run errands without them. My main reason for needing a nanny is that I feel overwhelmed on my own while my husband is at work during the day. Just looking for someone that my kids can look to that is not just me.