I'm not sure how far back you want us to go. Born in the freezing winter lands of the former USSR, Vlad and Sergie Magdalin embarked on a... oh, not that far? :)

I've been doing freelance web design on the side for a long time (actually bought the webflow.com domain in college for that purpose, going into a lot of debt in the process), then worked at Intuit for several years on an a social enterprise product. Studied CS at CalPoly, and spent a few years wandering through art school in SF before that.

My brother (Sergie) studied at UCSD and worked as a creative director for MuirSkate.com prior to starting work on Webflow. You can see his (now outdated) portfolio here: http://sergie.info/

I'd like to know too. This is an absolutely amazing tool, functional and built beautifully.