Nanny Needed For My Children - Full-time / Part-time

We are looking for a great reliable babysitter for 2 children near Pentagon City. We would prefer a babysitter who does not smoke, who is CPR certified and who has a college degree. The hours may vary slightly but Im willing to discuss an hourly or daily rate, and a set minimum even if I get out of work early. Must be experienced with crawling age babies and toddlers.