Babysitter Needed - Full-time / Part-time

We are looking for a great nanny for 1 child in Houston. We would prefer a nanny who has their own car, who does not smoke, who is comfortable with pets, who is CPR certified and who has college degree. My daycare closes at 6 but I do not get off until 6:30 so I just need someone to fill the gap and be available for the days I work late. Will always pay for a full hour even if it is just 30 min.