Born in Tudela, Navarre, Ros began his professional career at Real Sociedad, making his senior debut with the B team in the 2001–02 season, in the Segunda División B.
He played a further three and a half years with the Basque club before joining Real Jaén in January 2006, acting as captain of the latter.
[1][2][3] Ros spent the following four campaigns competing with the Andalusians, leaving in June 2010 and signing with SD Eibar also in the third division.
[4] In July 2012 he moved to CD Tenerife still in the third tier,[5] finishing his first season with 40 appearances (playoffs included) as the Canarians returned to Segunda División after a two-year absence.
[6][7] On 29 September 2013, aged nearly 31, Ros played his first professional match, starting the 1–0 home win over Real Madrid Castilla.