Babysitter - Full-time / Part-time

Hello! My wife and I have a 3-year-old girl and are looking for help with childcare. Our daughter is potty-trained and pretty independent. She attends daycare full-time, but my wife and I are physicians who work shifts, so there are sometimes gaps in childcare. We primarily need coverage for date nights, occasional daycare pickups/dropoffs, and weekends. We would be looking at coverage about once or twice a week for 3-4 hrs at a time. We are also expecting another child in January and will need a full-time nanny then. We would be open to considering someone who can transition to a full-time nanny role next year, but this is not required.