Sara, cherche une nounou à Genève

We are an English-speaking family with two children (ages 1 and 4). We are looking for a caring and reliable nanny to look after the one-year-old while the four-year-old is at school. The start date would be early March, four days per week (Mon, Tue, Thu, Fri). The job would require some light housekeeping, picking up the four-year-old from school and looking after both children during school holidays. French would be a definite plus.
Many thanks in advance.