Summer Nanny For 11yo Boy And 8 Yo Girl

I am looking for a safe, caring, and reliable summer (late June- late August) babysitter for my 2 kids as I return to full time work. I work in healthcare, so sometimes the schedule can vary, so someone with flexibility is ideal. Monday evenings would include taking my daughter to a weekly appointment, so you must be a safe and responsible driver who is comfortable driving with children. This is their first summer not doing camp, so the main plan is to hang out at home and do their summer work, but also have fun!