Speaking from experience: I coded many thousands lines of Ruby code for my startup all alone. Then we raised seed, and hired a few additional developers. Two of

Speaking from experience: I coded many thousands lines of Ruby code for my startup all alone. Then we raised seed, and hired a few additional developers. Two of them joined my project and took over the development from me. They're both very experienced programmers, but had no prior Ruby experience. It took them less than a month to become productive. Srsly. In short, if you write good code and bring in good developers, Ruby probably isn't going to be a problem.