Serguei Saavedra will join the faculty in January 2016 as an assistant professor in Civil and Environmental Engineering. He received a PhD in engineering science from Oxford University. For the past four years he has been working as a postdoctoral fellow at the Department of Integrative Ecology at Doñana Biological Station in Spain, at the Department of Environmental Systems Science at ETH, and at the Institute of Evolutionary Biology and Environmental Studies at the University of Zurich. Saavedra works in the area of community ecology, developing quantitative methods to understand the factors responsible for sustaining large species interaction networks. His work has revealed significant connections between the structure of these networks and the range of conditions leading to species coexistence. He has established foundations to study the response of these networks to the effects of environmental change. Saavedra’s work also has applications to sustainability in large socioeconomic systems.