Afternoon babysitter in Flatbush

I'm looking to hire a babysitter in Flatbush Monday-Thursday 2-6 pm starting in August or September. Kids are 2 (boy) and 4 (girl, gets home later). I'm looking for an adult who is responsible and proactive. Responsibilities include taking the kids out to the park/library, preparing food for them, doing activities with them, and some light housekeeping such as putting away toys and washing dishes.