Assistant house manager for home in Brentwood

We are looking for a wonderful assistant that can help the house manager with details such as organizing the office, filing, using a mac proficiently, google calendar, errands, shopping, returning clothing, a lot of ordering on line. Help communicate with the office and the house. The calendar and the day to day changes a lot, so we are looking for an uber-organized person. The hours of the position are from nine to Five. this could be a temporary position that could possibly go to full time. There are 2 dogs in the house, so being pet friendly is also very important!