Trifunović began his pro career with Crvena zvezda before moving to KK Zadar where he played for 3 seasons under head coachesDragan Šakota, Slavko Trninić, and Krešimir Ćosić. He returned to Crvena zvezda in summer 1991, contributing greatly to the club's two back-to-back league titles.
Coaching career
Trifunović was the manager of the Serbian League club Crvena zvezda during the 2001–02 season. Trifunović was the head coach for the Serbian club Crvena zvezda during the 2002–03 season and during the month of December during the 2004-05 season. He firmly established his head coaching career in Lithuania with the Lithuanian League club Lietuvos rytas in the years 2006–2008. Rytas club reached the ULEB Cup finals in the 2006–07 season and the EuroLeagueTop 16 stage in the 2007–08 season. He also won the Baltic League championship in 2007 for Rytas. In the 2008 off-season, he became the head coach of the Greek League club Panionios. In 2009, he became the head coach of the Russian Super League club Spartak Saint Petersburg. He resigned from the club on November 10, 2009. On December 27, 2009, Trifa signed a new one and a half year contract with Crvena zvezda. In October 2010, Trifunovic returned to Lietuvos rytas. Despite a slow start, he led the team to the Euroleague Top16. However, a loss in the LKF cup and finishing only 3rd in the Baltic League led to Trifunovic parting ways with Rytas in April 2011. After starting the 2011–12 season without a team, Trifunovic shocked everyone when he became the head coach of BC Žalgiris, the archrival of Lietuvos Rytas. Trifunovic led BC Žalgiris to the LKF cup, and also helped win the Baltic League and the Lithuanian League championships, beating Lietuvos rytas in the finals. In December 2013, he became the head coach of BC Astana. In February 2015, he was released by the club. On February 9, 2016, he was named the head coach of Yeşilgiresun Belediye of the Turkish Basketball Super League. On August 11, 2016, he re-signed with Yeşilgiresun for one more season. On June 20, 2017, he was named as the head coach of Pınar Karşıyaka. In June 2019, he signed for Bosnian club Igokea. He left Igokea in October 2019 due to health issues.
