Nanny/Housekeeper Needed

We are looking for a lovely nanny/housekeeper to join our family to look after our 3-year-old son. We have a growing family with a baby arriving at the end of January. The first 4 months of the role will be housekeeping and looking after our 3-year-old son with occasional help with the baby in the mornings. Our 3-year-old is in school full time until 2. 45 p.m. every day. First language must be Spanish as we are bringing up our son bilingual. Must have a clean and valid drivers license as there is driving involved eg picking him up from school, taking him to after school activities. 40 hours a week maximum Mon - Fri with the occasional Saturday night babysitting. We are looking for someone with total flexibility as our hours change regularly. Housekeeping work includes cleaning, laundry, preparing supper for our 3-year-old etc.