Part Time Babysitter For Very Active 5 Yo Autistic Child

Looking for someone to simply play and interact with our son. He's 4 years old, level 3 autism, nonverbal. He's generally very happy and sweet. He does have a high sensory appetite so requires lots of movement. He loves to climb, run, bounce, ride his bike, etc. We are seeking someone with experience in caring for special needs children, who understands the expectations as well as the individual's limitations (communication, behavior, etc). We would like this to start somewhat supervised and are happy to allow more freedom (i.e., going for walks, to the playground, etc) as the relationship grows. We have 1 small cat who generally stays out of the way but she is around.