A product of Pietà Hotspurs, Sammut made his Premier League debut in season 2002/03. He joined Vittoriosa last season.
At Tarxien, Sammut joins another former Pietà Hotspurs player – Karl Pulo who joined the Rainbows last week from Birkirkara.
Carl Sammut is the club’s fourth signing as besides Pulo, Tarxien had signed goalkeeper Nicky Vella and striker Adrian Carabott.