Babysitter - Full-time / Part-time

Looking for a reliable nanny. My schedule varies greatly depending upon my work and other responsibilities. Mostly, I am at home either working from my desk, taking care of house responsibilities or other task. Nanny would be okay with traveling with me to sport practice, theme parks, or other locations with the children. Other times I am not at home and would require nanny to watch the children but under surveillance. Hours are steady 15 hours a week with some weeks being a few hours more.