Sitter Job in Ottawa, Ontario

I work shift work, this includes weekends, evenings, and night shifts. I am generally able to arrange shift switches, but sometimes a sitter is required. My son is 5 years old, speaks French and English. He is with me 1 week, and then with his mother 1 week. I already have after school care with a daycare. I live in Hull, near portage, transitway service not far away, and about 20 buses that come within a 5 minute walk of my home. I do also have a dog. (Well tempered, good natured Samoyed)