Provide after-school support for two children, 8 and 11.

I’m looking for a reliable sitter for my two kids. It would likely be from about 3pm - 7pm, every Wednesday until probably June if not longer. I would need them picked up from their school and watched until I’m able to get home. My schedule is consistent, however there could be the possibility of a day where my shift runs much later, but that wouldn’t be a norm.