In addition to charting his own course with his company, Agile Consulting LLC (http://agileconsultingllc.com/), Rob is also one of the founders of Gaslight Software LLC (http://gaslightsoftware.com/). Both companies focus on web-based application primarily using the RubyOnRails framework (in the RubyLanguage, of course).
You can find out more at my personal home page http://alum.mit.edu/www/rob_biedenharn
If you want all (well, many) of the details, there's always my résumé http://agileconsultingllc.com/Biedenharn,Rob-Resume.pdf