Kornfeld got her start in radio at CITR-FM, the campus station at Vancouver's University of British Columbia where fellow disc jockeys included Terry McBride, founder of the Nettwerk label, and former Globe and Mail music critic Chris Dafoe.
After graduating from UBC she went on to work at CFOX-FM, first as a technical operator during the 2-6 a.m. shift and then as the writer for the syndicated program The Rock Journal.
RealTime was merged in 1997 with David Wisdom's Night Lines into a new program called RadioSonic, and Kornfeld and Wisdom continued as cohosts of RadioSonic until 1999, at which time Kornfeld took a leave from CBC to pursue graduate studies in Media & Communications at Goldsmiths College, University of London.
In 2002 Kornfeld founded Ubiquity Interactive,[1] a company that developed early mobile technology such as multimedia museum guides and cell phone applications.
Her work there focused on the new models of communication and new business structures enabled by digital, connected networks.