In 1975, he was recruited by Dassault Aviation to coordinate the Company's Falcon business jet programs between its Paris headquarters and its U.S. subsidiary, then called Falcon Jet Corporation, based in Teterboro, NJ, a joint venture between Pan-American World Airways and Dassault Aviation.
From 1974 through 1984, Jean Rosanvallon came to the United States as Assistant to the President of Falcon Jet Corporation, and was later promoted to Vice President, Finance.
From 1984 through 1994, He was Vice-President of Marketing based in Paris.
Returning to the U.S. in 1994 as Senior Vice President, Sales and Marketing, Jean Rosanvallon was responsible for consolidating the worldwide sales and marketing of Falcon business jets. He was named President of Dassault Falcon Jet in November 1996.