Sitter Job in Irvine, California

I need an after-school nanny for my 3 children ages 7 (2nd grade), 11 (6th grade) and 12 (7th grade). Duties include: picking up the kids after school, making a snack, getting them started on homework and making dinner. The ideal candidate would stay on top of their schoolwork and help them as needed, especially with Math. Hours are 2-6 pm, except Wednesdays would be 1-6 p.m. My kids are smart, delightful and all have their own personalities. They respond well to kindness. They love to swim and play games. The more you engage them, the easier the job will be. I am looking for a long term person to work with our family.