[1][2] In 2002, Mitea and Roberto Iancu were taken by coach Ionuț Chirilă on a one-week trial at FC Barcelona, but despite leaving a good impression, they did not sign a contract because of some problems with their sports agent.
[2] In 2002 he returned at Dinamo București where he started his senior career, making his Divizia A debut on 24 November when coach Cornel Dinu sent him on the field in the 87th minute in order to replace Flavius Stoican in a 1–0 home victory over FC Brașov.
[1][8] Mitea made his Eredivisie debut on 13 September 2003 when coach Ronald Koeman sent him on the field in the 77th minute in order to replace Tom Soetaers in a 4–1 home win with RKC Waalwijk.
[18] Despite the lack of appearances in these two seasons he did add the 2006–07 KNVB Cup to his list of trophies, playing three games in the campaign and scoring once in a 3–1 win over RKC Waalwijk but remained an unused substitute in the victory with AZ Alkmaar from the final.
[1][19][20] Due to minor injuries and still being out of favor with Henk Ten Cate, and then temporary replacement coach Adrie Koster, Mitea did not play a single game for Ajax during the 2007–08 season.
[1][25] In August 2010, Mitea signed with Greece second league side Ionikos, however he made no appearances for the team, then in the following summer he went back to Romania at Petrolul Ploiești where he worked with coach Valeriu Răchită.
[1][26] He made his debut for The Yellow Wolves when he was sent to replace Valentin Negru in the final minutes of a 1–0 loss with Rapid București, these being his first appearance in a football match after over two years of absence.
[1][30] He played eight games and scored two goals for Romania's senior team, making his debut on 20 August 2003 when coach Anghel Iordănescu sent him on the field in the 83rd minute in order to replace Adrian Mutu in a friendly that ended with a 2–0 away win against Ukraine.