· Adjunct Faculty (Computer Science), Columbia University2017–
· Co-Founder and CTO, WordsEye2013–
· Doctor of Philosophy (Ph.D.) in Computer Science - Computational Linguistics, Columbia University2009–2016
· Master of Science (MS) in Computer Science, Columbia Engineering2007–
· PhD Research (Computer Science - Computational Linguistics), Columbia University2007–2017
· President and Founder, Semantic Light LLC2003–
· Principal Technical Staff Member, AT&T Labs Research1999–
· Director of Software Development, Nichimen Graphics1995–
· Software Engineer, Information International Inc.1991–
· Member of the Technical Staff, Symbolics Inc., Graphics Division1983–
· Graduate Study in Computer Science - Artificial Intelligence, University of California, Berkeley1980–1981
· Bachelor of Science (BS) in Computer Science, Columbia University1976–