After School Nanny with Special Needs Experience

We're a family of four with two daughters, aged 12 and 9. We live near Seven Dials / Port Hall and the girls go to school a short walk away. I work in Brighton and occasionally from home, but am looking for after school support for a few days a week to help with pick-ups and after school activities. Our older daughter walks home from school and is happy to look after herself, get on with homework. Our younger daughter needs picking up, walking home and importantly someone to keep her engaged and inspired between school and tea time. She is autistic, and while she has no particular special needs, it is important for her to have someone she trusts who can keep her engaged.