Looking for a nanny for 7 years old Nicholas

We're an English/German/Croatian speaking, professional family of 2, with single mum and 7 years old Nicholas. Nicholas goes to school and day-care full time, but we're looking for a regular, flexible nanny who would be able to be home with him from 5pm till I come back from work, usually between 7 and 8pm. This would be about 3 hours a day, or more, and it would include preparing his dinner and sometimes, putting him to bed. You would also need to be able to stay with him over night when I travel for work, which happens monthly, 1-5 nights. If you're able to help Nicholas with his homework, it would be a plus.

This is a regular job and I'm looking for a long-term, flexible person who will be treated as a member of the family.