JP Onnela is an Assistant Professor of Biostatistics. Before joining the faculty, he spent two years as a Postdoctoral Fellow at Harvard Medical School, one year as a Fulbright Visiting Scholar at the Kennedy School, and two years as a Junior Research Fellow at Oxford University. He obtained his doctorate at the Helsinki University of Technology (now Aalto University) in 2006. He is interested in a broad range of theoretical and applied problems in network science. His current research focuses on statistical and mathematical analysis and modeling of social networks and their connection to human health; development of metrics and methods for network analysis; and online social systems and social media. His applied work uses large datasets, such as those derived from cell phone metadata, to learn about the structure and dynamics of human social systems.