His first spell at PFC CSKA Sofia spanned one season (1990–91), after which he moved to Lokomotiv GO, and then played a short time for Jeju United of South Korean K League, then known as Yukong Elephant and Bucheon SK, only to return to PFC CSKA Sofia for another year.
He then spent some time playing in LEKS (Litex) before again returning to PFC CSKA Sofia for a third spell since December 1997.
After a hesitant start in the Western "B" group in September Filipov was fired from FC Vihren Sandanski.
The first season of "A" group in the history of Kaliakra Kavarna began with a shock victory away to PFC Slavia Sofia 1-0, but after a few poor results Filipov was fired.
In October 2011 he was invited by Dimitar Penev as assistant coach at the headquarters of CSKA Sofia.