Sitter for infant comfortable with big dogs - Full-time / Part-time

My name is Jackie, my fiancé is Zack, our son's name is William, we also have a 115lbs yellow lab named Hagrid. We are easy going and nerdy, Zack is a service advisor at Young Honda and I am a music therapy intern at the sunshine terrace foundation. We need a sitter to care for William (and maybe give Hagrid some pets) from 7:30am-5:30pm Tuesday-Friday. In regards to the "light housework" what that would entail is just picking up after yourself and cleaning bottles and things used for William during the day.