Ryan Bigg won a Ruby Hero Award in 2011 for his work on documentation within the Ruby on Rails community, including work on several of the official Ruby on Rails guides, and his first book Rails 3 in Action, which is now in its second edition as Rails 4 in Action. On the Leanpub side of things, he wrote Multitenancy with Rails.
He previously worked full-time on the open-source parts of Spree Commerce as the Community Manager, but now works full-time at Culture Amp. Oh, and he is well-known on Stack Overflow for providing great answers for Ruby and Rails questions.
He even has a blog.