Hey Amy. I don't have a name for you, but you might consider using Kyla, The Nanny Consultant. We've had baby sitters off and on for years and really enjoyed working with Kyla. She has a gift for digging into your specific needs and then setting you up with someone talented. There's also a great facebook group called Seattle Nanny Parent Connection for Seattle nannies.
Spilt Milk Nannies is an amazing resource for finding high quality nannies. Also echo Adam's recommendation of Seattle Nanny Parent Connection. spiltmilknannies.comnannyparentconnection.com