After-school nanny for 4-year old in NW3 area

Hello! Looking for a part-time nanny for our 4yo daughter and 1yo son.

Hours are Mon-Fri approximately 3-7, but can extend the hours if needed. Our daughter goes to school which is 7mins walk from the house and our son will start with a childminder who is 3 minutes away. We would like the nanny to pick up our daughter from school and our son from the childminder, walk them home and spend the afternoon together. Mum and dad will be working some days from home and some days at the office.

Our location is NW3, close to Fitzjohn's avenue. Preference for a native Greek or French speaker. Start date can be any time between October and January 2023, depending on nanny's availability. Thanks!