Babysitter Needed for my Children

Hi there, Im a first time mom and will be returning to work Aug 31st. Im looking for a nanny for my infant who will be 6 months old. Im looking for someone to work 3 days a week, 8 hours a day - guaranteed, and is open to being around a large 75lb Labrador and okay with light cleaning. Cooking is a plus. We would like to have flexibility on which days the nanny would be available to work. CPR certified, first aid trained and vaccinated preferred.