FS Engineering - known as Italferr until February 5, 2026 - is a joint-stock company fully owned by Ferrovie dello Stato Italiane and managed by Rete Ferroviaria Italiana. Founded in Rome in 1984, the company designs and coordinates projects for the construction of new high-speed lines and the modernization of the railway network.
In random order Acea, Anas, Atlantia, Autostrade per l'Italia, Caltagirone, ENAV, F2i, Italcementi, MAIRE, Mundys, Rfi, Saipem, Terna, Webuild, FS Sistemi Urbani, Cap Holding, FiberCop, FS Park, Impresa Pizzarotti