Mixed family looking for a helper

We are a dynamic youthful mixed culture family (western dad / Hong Kong mother) with a 7 1/2 years old boy. We are looking for a professional, diligent, well organized and trustworthy helper. A helper who can exercise great common sense, communicate well and who can help the mother with daily chores as well as taking care of our son. English language is a must, Cantonese would be a bonus.