Sameer Tilak is a staff scientist at the San Diego Supercomputer Center (SDSC), University of California at San Diego. He is a member of the Cyberinfrastructure Lab for Environmental Observing Systems (CLEOS). The lab focuses on research and development of middleware and tools for a variety of sensor network applications in engineering and science (ecology, oceanography, civil engineering). His primary interests are sensor networks, streaming data middleware, and large-scale distributed systems. Dr. Tilak participates in a variety of environmental observing system initiatives including the Real-time Observatories, Applications, and Data Management Network (ROADNet) and the Global Lake Ecological Observing Network (GLEON).