Lee Feigenbaum has been using Semantic Web technologies to architect and develop enterprise middleware and applications since 2003. He brings this expertise to his role as Cambridge Semantics's VP of Technology and Standards, where he is responsible for the design and development of the Anzo family of semantic applications and middleware. Lee is the author of Glitter, a pluggable SPARQL engine designed to query multiple data sources. Lee served as Chair of the W3C RDF Data Access Working Group, publishing the SPARQL query language and protocol specifications. Lee co-authored "The Semantic Web in Action," a December 2007 article in Scientific American. Before joining Cambridge Semantics, Lee spent five years as an engineer with IBM's Advanced Internet Technology Group. There, his experiences spanned knowledge management and annotation systems, instant-messaging software, and Web-based client application runtimes. Lee writes about Semantic Web technologies at his blog, TechnicaLee Speaking.