Nanny Needed For 1 Child In Brownsburg

I am looking for a nanny 2-3 days a week. I need someone with a lot of flexibility, because I don't often work the same days every week. I am an RN & I have to work 3 12 hour shifts a week, but sometimes one of those days is a weekend day & my kids are with their dad. I have a 3-year-old son that will be 4 in May! He is the sweetest little boy! I also have 2 girls that are 11 & 16, but they are in school & when they get home from school, they are self-sufficient. I get home at 8pm, but usually let my sitter leave after my son eats dinner because my girls can help! I am looking for someone for at least a year, but preferably closer to 2 years until my son is in school! This will be in my home. I do have 1 dog. I can give more details upon request!