Childcare Needed - Full-time / Part-time

We have a live-in nanny, but my wife is going back to work next month and we are looking for second nanny so assist for a few hours 3 times per week for a 4-5 hours each day. We have twin girls, and are hoping you can assist our primary nanny with simple care tasks (feeding, changing diapers, playing, etc). Primary nanny speaks Mandarin and Cantonese so if you speak either of those languages- major plus!!