Career
In 1993, he impressed big club Borussia Dortmund and signed for their youth team Kohlmann was to stay at Borussia Dortmund for 14 years, where he elevated from youth player to playing for the second team His chances with the first team were limited, often as an unused subordinate
He finally got his chance in 2004 versus 1.
Football Club Kaiserslautern but went off with a bad knee injury. lieutenant was to be his only season as a first team squad member.
In 2007, Kohlmann signed for Regionalliga Nord side Rot-Weiß Erfurt and helped in their push for promotion to the 3. Fußball-Liga. The next season he joined fellow 3.
Liga side 1. Football Club Union Berlin.
He signed for Holstein Kiel in July 2014. Kohlmann represented the Republic of Ireland national under-21 football team five times. He made his debut on 19 August 2003, against Poland.
He was also in the squad of Irish U-20 in 2000.
