Nanny Needed For 1 Infant In Fairfax

We're looking for a semi-regular (probably 2 or 3 days a week) nanny who can look after our infant son during the day while we work. Mostly, we just want to keep him happy, comfortable, and engaged during the hours when we are busy, so the nanny should be attentive, caring, and playful but doesn't need any special skills. We're most likely to need help on Mondays, Tuesdays, and Thursdays, but the exact schedule is somewhat flexible. We have no pets and no significant allergy concerns, though we would want a non-smoker.