Tsitouridis worked for the European Commission in Brussels from 1981 to 1990 and 1995 to 1996 on matters pertaining to agriculture, competition, state subsidies and the internal market. He has been a member of the New Democracy Central Committee since April 1994. He was elected MP in the Kilkis constituency in the general elections of 1996 - 2000 - 2004 and 2007.
Tsitouridis worked for the European Commission in Brussels from 1981 to 1990 and 1995 to 1996, focusing on agricultural policy, competition law, state subsidies, and the internal market. He has been a member of New Democracy's Central Committee since April 1994. He was elected as a Member of Parliament for the Kilkis constituency in the general elections of 1996 - 2000 - 2004 and 2007.