It depends on how one defines "god". If a god is defined as eternal, as having always existed, then one could not evolve into such a god by definition. Moreover, no matter how sophisticated some life form becomes, there would still be no reason to believe it could establish a supernatural realm, where souls could exist in and go after they die. The fact that some incredibly powerful beings could evolve over time, I believe that is a given from science. One cannot even exclude the possibility that our universe came into existence by some advanced life form punching through from another universe.
I also fail to see how any advanced life form would be able to escape cause and effect. No matter how intelligent, how powerful, some being becomes, strict determinism still rules the day and the being won't have any free-will in the sense many religious people ascribe to a god.
And of course as Spinoza said, a god with free-will has its limitations, and is therefore not omnipotent, as to will a thing you do not already have is to admit you are lacking in that thing.
Of course, Spinoza was an atheist in any meaningful sense of the word.
When he proved god, he proved that no previous view of god was capable of existence. In so doing he demonstrated that an unlimited god was not limited by the universe, was not outside the universe, was not inside, a part of or, a part from. God, by definition is all that exists and is therefore nature. Deus sive Natura