Railwaymen is one of the best Ruby on Rails development company I've dealt with. Prior to them, the other companies either had an important language barrier or their service was too expensive. Railwaymen produces some of the cleanest code, which is extremely important so that you don't run into problems later on. Their service was professional, they always understood my requirements, and they delivered on them within schedule. I have no restraints in recommending them for your RoR development needs.