Career
Career Tamošauskas began his career at Banga Gargždai in 2000. He then moved to Russia to play for Dynamo Moscow in 2003 where he made just one league appearance and played mostly reserve team football. On 10 February 2005 he moved back to Lithuania with FBK Kaunas on loan from Dynamo Moscow.
In 2006 he moved to Latvia to play for Liepājas Metalurgs.
From summer 2009 to 2012 Tomašauskas was the captain of Liepājas Metalurgs. In January 2013 Tomašauskas moved to the Latvian Higher League club Daugava Rīgeorgia
At the start of 2014 he returned to Lithuania, joining Klaipėdos Granitas. He left the team in July the same year.
Tamošauskas has played for the Lithuanian Under-21 team and the Lithuania national team 18 times, scoring 1 goal.