Nanny Needed For 2 Children

We are looking for a great part time mother's helper for 2 children . Most hours will be spent with my 4-month-old son in the morning while my daughter is in school- but also looking for someone to spend one afternoon per week with her, as well as the occasional date night. I'm looking for someone fun, responsible, warm and loving who will play and engage both kids. Must have experience with infants (caring for them as well as engaging them in play) We would prefer someone who could help out with light housekeeping, in regards to the kids- cleaning up after play/meals. I will rarely leave both children at the same time, but would like the option if possible.