Seeking a responsible babysitter for two children

We're a family in the foothills looking for a warm, reliable, and active nanny to care for our two children: a 5-year-old boy and a 2-year-old girl. This is an occasional, as-needed role, roughly 9 to 5. We'd need help during school holidays and breaks, and occasionally on weekends. Our kids love being out and about. Our previous nanny took them to playgrounds, the zoo, the children's museum, etc; we cover entry fees. You'd be driving them to these outings, so a valid driver's license and clean driving record are essential. We provide a vehicle with car seats. French speakers are especially welcome. I'm French and speak French with the kids, so this is a real plus (but not required)