Rauch's most notable paper was published in Nature and concerned the mathematical modeling of the conservation of biodiversity.

He then worked at the IBM Watson Research Center in the theoretical physics department, and began graduate study at Stanford University in 1996.

He received his PhD from the Massachusetts Institute of Technology in 2004 under the direction of Gerald Sussman: his thesis topic was " Diversity of Evolving Systems: Scaling and Dynamics of Genealogical Trees " He then joined the Department of Ecology and Evolutionary Biology at Princeton University as a postdoctoral fellow in the group of Simon A. Levin, the Moffett professor of biology in 2005, and was in that position at his early death.

His hobby of collecting place names led Rauch to found MetaCarta with John Frank and Doug Brenhouse.

[2] He founded several organizations, including He proposed an approach for car-free neighborhoods to the zoning board of Cambridge, Massachusetts.