Jeff joined OCLC as a software developer in 1987 and OCLC Research in 1998. Projects along the way include Duplicate Detection and Resolution, Authority Control Service, Cooperative Online Resource Catalog (CORC), WorldCat Registry, and WorldCat Linked Data. He has served on technical committees for the specification of various standards, including OAI-PMH, OAI-ORE, ResourceSync and was coauthor of the W3C Library Linked Data Incubator Group Final Report. Jeff obtained an MLIS from Kent State and a B.S. in computer science from Ohio State. His current research interests include Linked Data and Big Data.