Childcare Needed

We are looking for a great babysitter for 2 kids in Denver: 8yo boy going into 4th (funny, kind, athletic) and 4yo girl in preK (confident, curious, artistic). Looking for help 2-4 days a week, after school pickup, shuttling to practices, keeping busy in the evenings, light cooking (if possible), winding down for evening. Must have reliable car and fairly reliable schedule. We are flexible on which days of the week, but ideally will settle on a set schedule with the right caregiver. Dad travels and mom needs a hand, especially with shifting schedules during the summer camp weeks.