In 1934, Rosselot came to Georgia Tech. Initially an instructor in physics (1934–35 and 1936–37) and Mathematics (1935–36), he quickly ascended through Assistant Professor in Physics (1937–39) to Associate Professor of Physics (1940–41) and later Professor of Physics (1941–43). In 1940, Rosselot was appointed by
Georgia Institute of Technology president
Marion L. Brittain as the assistant director of the Engineering Experiment Station (now known as the
Georgia Tech Research Institute). From 1941 to 1952, Rosselot was the organization's director, replacing the recently deceased acting director
Harold Bunger. In his tenure as director of Georgia Tech's Engineering Experiment Station,
World War II significantly increased the number and value of contracts coming to the station, and is credited with GTRI's entry into electronics, especially
telecommunications and
electronic warfare. At the end of World War II, Georgia Tech had about $240,000 annually in sponsored research. Other accomplishments during Rosselot's administration at the Engineering Experiment Station included the purchase of an
electron microscope in 1946 for $13,000 (), the first such instrument in the
Southeastern United States and one of few in the United States at the time. The Research Building was expanded, and a $300,000 ()
Westinghouse A-C network calculator was given to Georgia Tech by
Georgia Power in 1947. Rosselot's administration also included the 1946 establishment of the Industrial Development Council, renamed to the Georgia Tech Research Institute in 1948 and to its present name, the
Georgia Tech Research Corporation, in 1984. When the
Georgia Board of Regents ruled that all money received in a year had to be spent that year; this was problematic because most government contracts span multiple years. Georgia Tech president
Blake Van Leer and vice president
Cherry Emerson created the solution, a non-profit corporation that would manage contracts for research services and subsequently hire the Engineering Experiment Station to perform the research. The new organization would also handle patents garnered through research, and distribute funds garnered from contracts and patents as needed. In 1951, there was a dispute over station finances and Rosselot's hand in the foundation of
Scientific Atlanta against Georgia Tech vice president
Cherry Emerson. When it was founded in October 1951, Rosselot was president and CEO of Scientific Atlanta; at issue was potential
conflicts of interest with his role at Georgia Tech and what, if any, role Georgia Tech should have in
technology transfer to the marketplace. Rosselot resigned his post at Georgia Tech in November 1952 (and was on leave until March 1953), but his participation ensured the eventual success of Scientific Atlanta and made way for further technology transfer efforts by Georgia Tech's
VentureLab and the
Advanced Technology Development Center. ==Bendix==