Ken Macleod
Background Information:

Wikipedia Bio

Reader's Thoughts:

His first four books are mostly "near-future"/cyberpunk affairs but overall they take a look at how AI evolves from todays tech, baseline humans interacting with uploaded "fast-folk" and the construction of a proto-Culture (along with a proto Special Circumstances ref: The Cassini Division).

His new trilogy (Engines of Light) is probably closer to some of the memes in OA but isn't as well written.

James Targett