House Sitter For Large Dog

We have one dog Toby who is 5 years old, he is a mastiff/lab mix and he is 130lbs. He is very playful, energetic and sweet. We are looking for someone who can house sit and stay with him when we travel. We will be traveling multiple times from February-August. They would be in charge of feeding him twice a day, playing with him, letting him out every 6-8 hours and staying with him overnight. We would prefer someone who has their own transportation and is a non-smoker.