Džiugas Bartkus was born on 7th November 1989. He started his career with FC Partizan Minsk in 2010. In 2011 Džiugas joined FC Dinamo Brest, a football club based in Brest in Belarus. Džiugas Bartkus left FC Dinamo Brest and joined FBK Kaunas in 2011.
Between season 2012-2016 Džiugas formed part of FK Suduva Marijampole a club based in the city of Marijampole, Lithuania, he made a total of 83 appearances.
In 2015, Džiugas was called with the Lithuanian National squad for the EURO 2016 qualifications.
In July 2016, Džiugas Bartkus joined Valletta FC and signed a one year contract.