Part-time Sitter For 4 Month Old Girl

We're looking for someone to watch our 3-month-old little girl for 1. 5 days a week. We expect the days to be Wednesday (full day) and Thursday (1/2 day). Both my wife and I work from home and will be here should you need anything during the day. We both have separate office spaces and will be out of the main area of the house during the day. Experience working with infants / newborns is preferred. Certifications or professional experience is also highly desired. We're hoping our caregiver can give our little girl the love and attention she needs while we're focused at work. We also have a 4-year-old black lab mix who is very sweet and gentle. She sleeps for most of the day but does love attention. Our caregiver must be comfortable with dogs.