Scienctific principles and the belief in a Creator are not mutually exclusive ... except when the "Creator" is defined by strict religious doctrine, as with the literal interpretation of Genesis.
Scientists, and anyone else, can believe in a Creator, yet see the myriad competing, contradictory constructs of Man-made religious doctrines for what I personally "believe" they are: unprovable theories, fables, allegories, myths.
Science is a fluid thing; through trial and error, repeated experimentation, and withering critique and cross-examination from other qualified scientists, it seeks Truth.
Religion, on the other hand, is generally static. Set in stone. It purports to KNOW Truth, is NOT open to interpretation (there, how's that for an open door?), and is supported by FAITH, not testable, objective evidence.
Religions says, "Trust us; we Know."
Science says, "Trust, but verify."