degree with a dissertation on the history of foreign language teaching in the Soviet occupation zone (SBZ) and East Germany (DDR) from 1945 to 1989.
His first public office was as a member of the board of the ministry of education (Behörde für Schule, Jugend und Berufsbildung) in Hamburg from 1997 to 2002.
[3] In 2001, he became a member of the board of the ministry of environment and health (Behörde für Umwelt und Gesundheit).
[4] From 2001 to 2004, Sardina was the party secretary (whip) of the CDU parliamentary group in the regional assembly (Bezirksversammlung [de]) of the district of Hamburg-Mitte.
[5][6] He also served as the spokesman of the CDU fraction for Asian affairs[2] and as a member of the board of directors of the "Asien-Brücke" (literally: Asia bridge), a Senate-run foundation focusing on development aid to Sri Lanka.