I'm extremely proficient with Ruby and Rails which I've been writing full time since 2007 with Rails 1.2. I've worked alone and on teams with many startups building apps from ground zero and also coming in as an expert to help scale and build out important features.
People hire me because I'm excellent at what I do and am quick to identify solutions since I've worked with many teams and have had the chance to pick up a great deal of best practices. If I can figure out your problem, I'll know very quickly. I'm smart and get things done.