Nanny Needed For 4-mo Old Child In Boston

We are looking for a nanny to start in May in the Back Bay or South End area (we will be moving then), when our baby will be 4 months old. My husband and I unfortunately have busy work schedules, so we would need someone who is flexible. Tentative schedule includes 7 a.m. - 7 p.m. M-F with the flexibility to stay late if needed, and guaranteed ability to stay over a few nights per month when my husband travels. Responsibilities would also include taking our daughter to music & play classes, to playdates, the park, reading to her, preparing her meals, etc. Thanks in advance!