Doroftei took up boxing at the age of 14 at the Ploieşti boxing club. From 1983 to 1984, he won every Romanian national junior title. He went on to win five national senior titles in 1992–1994 and 1996–1997. He won bronze medals at the 1992 Summer Olympics in Barcelona and the 1996 Summer Olympics in Atlanta. In addition, he was declared World Champion in 1995 and European Champion in 1996. His record as an amateur was 239 victories and 15 defeats.
In 1997, Doroftei turned professional, signing with the Canadian club Interbox. Throughout his career, Dorin competed on ESPN, Showtime, and HBO. On 5 January 2002 he won the WBA world lightweight title, winning in a thrilling split decision over Argentinian boxer Raul Horacio Balbi 112–115, 114–113, 115–112. On 31 May the two fought again in Bucharest; this time, Dorin scored a knockdown en route to a clear cut unanimous decision victory, 118–111, 117–112 and 118–110. A lightweight title unification bout on 17 May 2003 with American boxer Paul Spadafora, the IBF champion, ended in a draw, 114–114, 115–113, 114–115. The bout took place in Spadafora's hometown of Pittsburgh, and Dorin was a significant underdog. However, Dorin seemed to control the vast majority of the fight. He got to Spadafora early and often, surprising the champ with his intensity and workrate. Most observers agreed that Dorin had been robbed of a decision he deserved. Unfortunately for both fighters and boxing fans, a rematched never materialized. On 24 October 2003, Doroftei was to fight a match against Panamanian boxer Miguel Callist. Doroftei had already announced that this would be his last professional match regardless of the result. As it turned out, the match was cancelled after Doroftei exceeded the maximum weight for lightweights at the weigh-in: he was over the weight limit, so he lost his WBA title. On 24 July 2004, Doroftei lost his undefeated mark when he tried to get the WBC title, getting knocked out with a body shot in two rounds by Arturo Gatti.
Retirement
He now resides in Romania with his wife and 3 children and is working as a trainer for boxing prospects. He has his own pub-restaurant in Ploieşti, which is decorated with his photos and memories from his boxing career. In November 2012, he was elected President of Romanian Boxing Federation.
