Sitter For Baby Boy

My husband and I have two littles, a generally happy baby boy who was born in March and an imaginative little girl who's now in preschool. We're looking for someone to give undivided attention to the baby while I work. We also would really like help with light household chores. My daughter will be home after preschool. She's usually very independent and helpful with the baby. The hours would follow the school calendar (help needed during the school year and not on school holidays or snow days). We have a very social cat who likes to be around people whenever possible.