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Oana Dan is an accomplished data science professional with extensive experience at Nielsen, where roles have included Vice President, Director, Manager, Research Manager, and Research Scientist since July 2012. Prior to this, Oana completed a PhD in Sociology at Harvard University, focusing on public opinion in the European Union, and held various positions including Research Assistant and Departmental Teaching Fellow. Notable experiences include coaching members of the Harvard Graduate Consulting Club and conducting consumer analyses during an internship at Copernicus. Oana's early career included a trainee role at the European Commission where public opinion data was analyzed. Educational background includes a BA in Sociology, French, and Mathematics from Middlebury College.