He started his career in his home town at Dainava Alytus before moving to Žalgiris Vilnius in 2001.

Karčemarskas played one more season for Osmanlıspor in the second division before retiring from professional football in summer 2019.

Karčemarskas made his debut for the Lithuania national team in February 2003 in a friendly match against Latvia.

After finishing professional's career, Karčemarskas began to play in the live poker tournaments.

[4] On 23 October 2022, he won the main event of the Vilnius Open Championship, the largest tournament in Lithuania, for €13,375.