Looking for helper to take care young kids

I am a father of two kids, one is 7 years girl and another is 4 years boy. Me and my wife are looking for a helper that who can help us to take care the kids while we are working. The helper will have a small but separated room, with a toilet, or a bedding room which is shared with kid. She will have one day holiday every week. She will share the food with us at most of the time. The salary is negotiable based on candidate’s background and skills, and bonus will be provided based on performance. We are expecting the candidate could:1. Good at looking after kids. Can play with kids, enjoy to stay with kids, and get kids’ respect.2. Good English oral/writing communication.3. Knowledge of house keeping, cooking and shopping, has common sense of domestic machine especially kitchen machine usage.4. Could understand the job range and responsible for every details. Be able to handle work proactively. 5. Bachelor degree or higher, like to accept new things , be smart enough to learn.