Jay Greenfield (CODATA) began his professional career as a research assistant developing artificial intelligence applications in a university environment. These apps could both listen and speak. They were expert systems that assisted in medical diagnosis. In 1992 Jay joined Westat where eventually he became the leading technologist. At Westat Jay used his knowledge of artificial intelligence to create actionable metadata. He used actionable metadata to spawn survey research questionnaires programmatically, construct data management pipelines both retrospectively and prospectively and create data dictionaries. While at Westat Jay led the development of data collection and data analysis systems for many major health and nutrition studies including the Medicare Current Beneficiary Survey (MCBS), the Medical Expenditure Panel Survey (MEPS), the integration of the Continuing Survey of Food Intake by Individuals (CSFII) with the National Health and Nutrition Examination Survey (NHANES) and the development of the original legislation for the Children's Health Insurance Program (CHIP). In 2008 Jay joined Booz Allen as a study and data management expert on the National Children's Study (NCS). On the NCS Jay worked as a health informatics architect with data standards, data standard groups and terminologies to annotate medical data with metadata in order to facilitate search, research and discovery. On another project Jay collaborated with a small team of international experts who were developing a research information model able to annotate hypotheses, common data elements (CDEs), data collection instance variables, data management data processing pipelines, data cubes and data analysis design patterns using a set of RDF vocabularies joined in a common profile. More recently, Jay worked as a business architect in the Federally Facilitated Marketplace (Obamacare). In this capacity he has participated in the design and development of changes in the Marketplace logical and physical architecture that both opens it to new populations and grows its security. Obamacare integrates an insurance application with data from as many as nine Federal databases in real time. Currently, Jay consults with data integration projects in Sub-Saharan Africa helping with data integration architectures and data documentation. Jay is grooming the OMOP CDM to become a cloud-based Platform as a Service (PaaS) fit for the purpose of African Open Science Platforms. Jay has a Ph.D. in Social Work and Statistics from the University of Pittsburgh, an M.A. in Clinical Psychology (Psycholinguistics) from Duke University and a B.A. in Social Relations and Visual Studies, magna cum laude from Harvard University.