Part-time Nanny/nurse For 4 Month Old

We are a family and we will be back in Brooklyn for some of July and August. We have a 4-month-old son and are looking for a part time sitter/nanny who can be with him for half days, ideally 3 morning shifts from 10-2 and then 2 afternoon/evenings from 4-8 (hours and days are somewhat flexible). Dates are from July 1 - July 19, and again July 30- August 11 (or longer). It will mostly be playing with him, going for walks, some feedings, and supervising naps. Newborn/infant experience a must. Familiarity with Montessori, Waldorf or RIE philosophies a plus. Also potentially opportunity to travel with us for other parts of the summer. Please only apply if you have reviews or references. Compensation competitive.