Career
He is 1.92 m (6 ft 4 in) tall. He can play point guard or shooting guard, preferring the latter position. Mažeika began his professional career in 2000 with the Lithuanian club Neptūnas where he stayed until 2004.
He then moved to Alba Berlin for three years, the last one on loan to Telekom Baskets Bonn.
Then he played at Capo d"Orlando and Khimik. During the 2008-2009 season he returned to Neptūnas and started the 2009-2010 season with VEF Rīgeorgia
On January 15, 2010 he joined the Greek League club A.E.K. Athens. In October 2010 he returned to Neptūnas again.