(SGI), 1999–2000 Vice President & General Manager, Web Products, Silicon Graphics Inc. (SGI), 1998–1999 Vice President, Interactive Media Group, Apple Computer, 1997–1998 Director, Interactive Media, Advanced Technology Group, Apple Computer, 1994–1997 Manager, Speech & Language Technologies Group, Apple Computer, 1991–1994 Principal Speech Scientist, Apple Computer, 1990–1991 Assistant Professor, Carnegie Mellon University, July 1990 Research Computer Scientist, Carnegie Mellon University, 1988–1990[37]