Warm, welcoming family looking for an energetic, caring, PT nanny for our 3 children (twins age 5 and a baby age 18 m) in Arlington for approx 25 hours per week (ideally M-F, 3-8pm). Responsibilities include (1) picking up our twins from school (in Cambridge) and supervising them after school at home, at playdates, at activities, etc., (2) assisting with dinnertime for the twins and the baby, (3) and helping with bedtime for all three kids. CDC-recommended vaccines are required.