Babysitter Needed for my Children - Now Hiring

We need a nanny! We are pretty overwhelmed right now with life and need a helping hand. My wife works odd hours, sometimes she leaves at 6am, sometimes 7 or 8. Sometimes she gets home at 4, sometimes 5, sometimes 6. I am a firefighter so I work 24 hour shifts. Here is the good part. My kids both go to school during the day so you'd only really have them before and after school until my wife gets home. During the day, you can throw laundry in, light cleaning, run errands or go home and come back at 3:30 to get the kids. We currently pay $600 per week (M-F).