Live-out/Full-time starting in mid-april in Wappping (London)

A kind family are looking for a proactive and reliable French speaking nanny with a positive behavior for their two children of 3 and 6 years old.
The nanny will assume her duties between 10am to 8pm during the school time and then between 9am to 7pm during holidays. The nanny will be in sole charge, as both parents are working. They are looking for someone who is able to supervise homework and stimulate the children, especially during holiday time (going to the museum, organising playdates with their friends, creating manual activities…)
Both kids are at school from 9am to 3.30pm, so the perfect candidate should be ready to help this family (who already have a housekeeper once a week) with light housework or PA duties such as collecting parcels from the post office, going to the dry cleaner, buying gifts for birthday parties…
An intermediate level of English is asking.
Salary : £500net/week