Single professional mom looking for nanny/ helper for 2 girls in Pasadena

Hello! I'm a single professional mom with 2 girls (ages 8 and 16). We are looking for a nanny/ helper approximately 30 hrs/ week starting mid August including ONE overnight weekday usually. One Saturday per month would also be appreciated for extra salary, of course. Duties include school drop off/ pick up for 1 child, transportation to after school classes couple times weekly. While she is in school, I would appreciate help with grocery shopping once weekly, dinner preparation, some laundry/ light housekeeping and occasional errands. My 16 yr old drives herself and would need minimal caretaking. Hoping to find someone energetic, reliable and committed who wants to make a lasting connection with 2 lovely girls! We also have 1 cat.