Nanny needed for High Profile couple who travels

This high profile family is looking for a European nanny and one that is a REAL career nanny.  Ideally the family would love someone who is European and who has their American citizenship. The nanny would need to start in August some time so there is an overlap and time for training. There is one boy who is five years old. There is a dog and a family car. The system that they have in place is a schedule of 4 days on duty / 4 days off duty. With the 2 nannies alternating. They will need to be able to travel with the family on vacations including holidays. Flexibility is a must.