After school nanny for an easy going 11yo boy

I'm looking for an after school nanny, starting Term 4, for my 11 year old son as I'm heading back to work full time.

He's easy going, fairly self sufficient and sporty. He has a few after school activities, so someone with a car and license is needed.

The role would include helping with homework (reading and worksheets), organising afternoon tea and attending after school activities on a couple of days, maybe heading to the park to run off some energy or having a swim on other days (we have a pool). Some evenings you'd need to prepare him a simple dinner, but I'd leave this ready to go.

Also some occassional babysitting in the evenings if I have an event or dinner.

NB - we have two labradors - who are friendly, but the applicant would need to be comfortable with big dogs.