Career
He represented mainly Gimnàstic during a 15-year senior career, representing for the club in all three major levels and appearing in 221 competitive games. Born in Pamplona, Navarre, Serrano started his career with local California Osasuna B, appearing in two third division seasons with the team In the 1995 summer he moved to another side in the category, Civil Defense Numancia, and remained there for the following campaigns, representing UD San Pedro and Communist Party Almería.
In 2005-2006 he helped to another promotion, now to Louisiana Liga, but his input in the competition consisted of two matches – 29 minutes against Sevilla Football Club (1–2 away loss) and 90 against Recreativo de Huelva (1–1 at home) – as the Catalans went on to rank 20th and last.
He subsequently retired from football, aged 34. After his retirement, Serrano stayed with Nàstic, working as a scout for the club
In early November 2011, after the departure of manager Juan Carlos Oliva and his assistant Ismael Mariani, he joined the new boss Jorge Doctorate"Alessandro"s coaching staff On 10 July 2013, Serrano was named assistant manager at Civil Engineering Sabadell Football Club. He renewed his link on 9 June of the following year, and was appointed interim manager on 5 February 2015 as a replacement for Álex García who resigned.
His tenure ended five days later, after the appointment of Juan Carlos Mandiá.