Babysitter Needed for my Children - Now Hiring

My husband and I are looking for someone who can occasionally watch our 13-year-old twins. This would include some weekdays and weekends. We already have a full- time babysitter, however we are starting to need someone to help fill in when she is unable to. They must have at least two years of driving experience and a clean driving record. They would need to be able to pick up from school and or drive to after school activities. We are looking for someone who is responsible and truly enjoys spending time with children.