Pet Sitter - Full-time / Part-time

I have a senior dog who is the only dog in the household for the first time ever. He is experiencing isolation anxiety and I'm seeking someone to hang out with him a few hours a week while I'm out of the house. He will be walked before you arrive, but will probably need a few sniff / pee walks around the neighborhood. He typically sleeps during the afternoon. He just doesn't like to be alone.