After playing with the youth teams of the Turkish club Beşiktaş, Güler began his pro career with the senior men's team of Beşiktaş, during the 2000–01 season. After then playing college basketball in the United States, he returned to Turkey, and joined Darüşşafaka, before returning to Beşiktaş. He joined the Turkish club Anadolu Efes in 2008. With Efes, he won the Turkish Cup and Turkish Super League in 2009, and the Turkish Supercup in 2009 and 2010.
On July 3, 2017, Güler signed a 2+1 contract with Fenerbahçe.[1] In 2017–18 EuroLeague, Fenerbahçe made it to the 2018 EuroLeague Final Four, its fourth consecutive Final Four appearance. Eventually, they lost to Real Madrid with 80–85 in the final game.[2] On August 6, 2019, Fenerbahçe exercised their option and released Güler from his contract.
Güler is the son of retired Turkish professional basketball player, Necat Güler who played (in 1975) and coached (in 1993) Fenerbahçe, and the younger brother of Turkish professional basketball player Muratcan Güler.