Giorgos Tsiaras was born in Larisa on May 4, 1982. He began his career with AEK, with whom he won the Greek Championship in 2002. During his career, he also played for: Olympia Larisa, PAOK, Nymburk (Czech Republic), Panionios, Ikaros, Aris, Gaz Metan (Romania), Melilla (Spain), Trikala, Apollon Patras, and Kymi.
After retiring as a player, he remained involved in basketball and initially worked with Iraklis as a team manager. He spent two years (2022–24) as team manager at Peristeri, while from the start of the current season until last March, he worked with Monaco.
Since June 2024, he has been serving as team manager of the Greek men’s national basketball team.