After school care for a 5 year old in Hawthorn

I am looking for a part-time nanny to provide after school care for my 5 year old son Thomas for the rest of the year. Thomas is an intelligent and active boy who loves Lego, learning and playing in our local park. I offer very good working conditions and live in proximity to parks and playgrounds. It would be optimal if you could help to prepare the evening meal for me and my two older sons. Sometimes I need to work later but usually I am home before 7 pm, and some flexibility will be required. I need somebody who can confirm that they will be available to collect Thomas from school in Hawthorn at 3.30 from Mondays through Thursdays for the rest of the year.