Nanny Needed

I need a nanny for my 3 children in Saint Louis that would start in October. Recurring job for before and after school care/coverage for my 6yo, 8yo, & 10yo kids. The days would be 2-3/days a week consisting of arriving 6:35 a.m. and getting kids to nearby school. Depending on if there are other tasks, there could be a break in the day before needing to be available when school is out around 3 p.m. for 2 hrs. If hours are needed in the day, I can accommodate but looking for avg of 12 hrs a week or less for $25-30/hr.