Salmon studied computer science at the University of Rennes I and worked as a software developer.

[1] He became active in politics as a teenager when he voted No in the 1992 French Maastricht Treaty referendum.

[2] During the 2017 French legislative election he contested Ille-et-Vilaine's 1st constituency but was eliminated in the first round.

During the 2022 French legislative election he was selected to run in Haute-Saône's 2nd constituency for the National Rally and defeated Christophe Lejeune.

[3] This article about a National Rally (France) politician is a stub.