Babysitter - Now Hiring

I am looking for a loving and caring babysitter/nanny for 2 children (12 & 6) in Rockville. I have a unique situation, as I have a week on/week off custody agreement with their dad. The ideal person would assist me with after school pick up, homework and activities with the kids. Occasional meal prep would be a huge bonus! I would prefer someone who could help out with light housekeeping also. This person would need to have their own car. Non-smoker and who is comfortable with a very sweet 80lb yellow lab.