Patrick Dorn's responsibilities include the configuration and management of ESnet devices, internal tool development, and general network engineering duties. Dorn has more than a decade of experience working with high performance networking in the research and education community. He comes to ESnet from the National Center for Supercomputing Applications (NCSA), where he served in both technical and management roles. As a network engineer he was technical lead for NCSA's heterogenous production network as well as primary WAN architect. A veteran SCinet Committee member, Dorn has served on multiple engineering teams to set up the complex temporary network that supports the SC conference series. As the 2008 SCinet Chair, he led the SCinet effort in Austin, TX. Dorn has also lectured on IP multicast deployment and troubleshooting.