Julien Rodriguez was trained by the southern French club FC Istres, but celebrated his professional debut in January 1999 with AS Monaco. In 2000 he was indeed with the club from the principality French masters, but he never came out of the role of complement player. Only when his rival Rafael Marquez in 2003 moved to FC Barcelona, Rodriguez played a central role in the team of Didier Deschamps again. Then he reached to the AS Monaco surprisingly the final of the Champions League 2004, FC Porto 3-0 could decide for themselves. However, the following season was not as successful for Rodriguez. That's why he joined the Scottish Premier League to the Rangers, where he developed a regular place at first. During his second season with the Rangers, he fell out, however, with the then coach Paul Le Guen. His contract was terminated and he returned to the Côte d' Azur to the traditional club Olympique Marseille, where he plays a big role because of his experience.
Because of good performance at Olympique Marseille, he was appointed so far the only time in the squad of the French national team on 4 February 2007. He was not used and is still waiting for his debut.