Dario is a social computing researcher, a technologist, and an open knowledge advocate based in San Francisco. As the Science Program Officer for Open Science at the Chan Zuckerberg Initiative, his goal is to build programs and technology to support open, reproducible, and accessible research. Prior to joining CZI, he served as the Director, Head of Research at the Wikimedia Foundation, the non-profit that operates Wikipedia and its sister projects. As a co-author of the Altmetrics Manifesto, a founder of the Initiative for Open Citations, and a long-standing open access advocate, he has been designing systems and programs to accelerate the discoverability and reuse of scientific knowledge by scholars, policy makers, and the general public alike. In this capacity, he has been an advisor to initiatives by the Public Library of Science, Crossref, the Allen Institute for Artificial Intelligence, and research consortia of the European Commission. Prior to joining the Wikimedia Foundation, he held research and teaching positions at University College London, University of Surrey, Sciences Po, Paris Diderot University, and the Jean-Nicod Institute. He holds a PhD and an MSc in Cognitive Science from the École des Hautes Études en Sciences Sociales in Paris, an MA in Philosophy of Science from the University of Pisa, and a licenza from the Scuola Normale Superiore in Pisa.