Babysitter / Nanny Needed For 3 Children In Mill Valley

Seeking an experienced babysitter / nanny with good references in Mill Valley for 3 children. I have 3 kids - a 2-year-old girl, a 4. 5-year-old boy and a 7-year-old boy. The girl is in preschool and both boys are in TK and First Grade. I need help for Tuesdays and Thursdays from 3-8pm, but am flexible with the exact timing and am open to more time slots depending on what works best for our family and the babysitter. I am currently not working, so I would imagine that I would be tag-teaming with the nanny most of the time, although there would be times when the nanny would have to watch all 3 while I'm busy prepping meals, etc. Hoping you can start immediately! Some light tidying up would be part of our caregiver's responsibilities.