Part time nanny/childminder three children after school/playschool

We have three great children aged 2.5, 5, and 7. They are fun-loving and playful. We need someone to do playschool and school pick up (v close walking distance), have some quiet time at home, lunch prep, play, homework help, outside, parks, playground, arts and crafts etc. Some child-related light housework, snack and lunch prep and keeping the place organized would be necessary. We would like someone who is experienced in minding similar aged children, is warm, has energy and fun and is reliable. Good level of English is necessary to help with homework etc.