She's been developing with Ruby on Rails since March 2005 - only a month after it was first released and very much pre 1.0.
She is a Rails core contributor and has released a fair amount of code back into the community as well as contributing articles and how-to guides via her blog.
Web Development Immersive
12-weeks. All day, every day. Learn the skills to become an entry-level web developer and the resources to get a job in this intensive program.