Childcare Needed - Full-time / Part-time

We are looking for a nanny for our 9-month-old infant starting in mid-August. My husband and I both work 12 hour shifts, and our schedules both vary from day to night. We would be looking to have someone come once a week for likely 12-16 hours and then one or two other days a week for shorter periods of time. Unfortunately, we do not have set schedules but we can schedule out for a couple months at a time to provide plenty of heads up. We are looking for someone who is also comfortable with pets, we have 1 dog and 2 cats.