At BigBinary we have been working with Ruby on Rails for 10+ years now. We were early adopters of Ruby on Rails after we saw how much more we can get done in a week with Rails compared to other technologies.
As we worked more and more with Ruby on Rails our passion for Ruby on Rails grew. We started understanding how Ruby on Rails actually works. Since Ruby on Rails is open source, we started contributing bug fixes. Slowly we graduated to implementing new features in Rails.
Over the years, we have made tons of contributions to Ruby on Rails code. BigBinary team members are constantly sending pull requests, reviewing pull requests and giving back to the community.
Some of our projects are as small as building a functional prototype in four weeks and in some projects we are still part of the development team more than three years after the initial launch. Some applications need to be HIPAA compliant and some applications deal with multiple payment processors.