Nagy played in his youth for the SV Wittgendorf castle in churches as well as for the FC Bayern Munich and moved in 1998 to Burghausen in the B- youth.
After his time in the youth teams he advanced to the Second Team, but from the beginning was a member of the so-called conveyor group of SV Wacker and was therefore able to train with the players of the first team. He came in the 2001/ 02 season to a use in the Regionalliga Süd. An injury threw him back and he was playing with the amateurs.
During the winter break of the season 2005/ 06 Nagy received after good performances in the amateurs a new opportunity and moved into the senior squad on. He came in 2nd Bundesliga to twelve inserts with a gate.
Before the season 2006/ 07 Nagy joined as Perspekivspieler to Hannover 96 But he could not play for his new club deny he had to undergo a pubic bone surgery. In order to gain match practice, Nagy was loaned during the winter break to his former club Wacker Burghausen.
Since 2007 /08 he wore the jersey of SpVgg Unterhaching, in which he qualified for the third league. Matchday 37 of the 2008/09 season he was able to score his first goal for the SpVgg against FC Carl Zeiss Jena.
Ironically there moved Nagy 2009/10. At FC Carl Zeiss Jena, he signed a two-year contract. On 27 April 2010 (28th Round ) he withdrew his club in the away game at Wacker Burghausen a cruciate ligament injury, which he had to pause for almost a year. For the 2011/12 season Nagy moved to third division side SV labor Wiesbaden, where he signed a contract until the end of the season.