When considering the question of "God", it's possible that the god/entity that created us has its own god that created it. Who is to say that our god is the same god as any given alien creature?
Oh, those robots only exist because we were able to build a physical structure and provide a means of power and environmental interaction.
It's also possible that our definition of "artificial" or "synthetic" is not universal. Maybe in the eyes of some alien, we are the ones who are artificial.
Oh, those humans only exist because we were able to build a physical skeleton and provide a means of power and environmental interaction.
Think just for a moment about plant tissue cultures. You take some chunk of a plant, stick it in a dish and give it some food, and ultimately you may end up with an entirely new plant clone from one tissue sample. That tissue sample might be a piece of leaf, but it will still be able to grow other plant tissues like roots, bark, flowers, etc. To me, this is evidence of a form of "engineering" as well as a very interesting lesson in biological recursion.