Jonathan Genest-Jourdain was born in 1979 in Uashat, an Indian reserve located in the Sept-Rivières Regional County Municipality, Quebec, one of the five MRCs of the Côte-Nord administrative region in Québec.
A lawyer by trade, he obtained a law degree from Laval University in 2005 and started a certificate in business law. He is a member of the Quebec Bar since 2006 and practices at his office; Genest-Jourdain, Avocat, in Uashat, Sept-Îles. After the elections of May 2, 2011, Jonathan Genest-Jourdain is the MP for the riding of Manicouagan under the New Democratic Party banner. He became the first aboriginal MP elected in Quebec along with Roméo Saganash. On May 26, 2011, he was appointed spokesman of the official opposition in Canada for Aboriginal Affairs and Northern Development.