Koloveros began his pro career in 2019, during the 2018–19 season, with the Greek Basket League club Olympiacos.

[1][2] For the 2019–20 season, he was assigned to play in the Greek 2nd Division, with Olympiacos' reserve team, Olympiacos B. Koloveros spent the 2021-2022 season on loan to Greek Basket League club Ionikos Nikaias.

In 20 league games with Ionikos, he averaged 9.6 points, 2.5 rebounds, 2.4 assists and 1.4 steals, playing around 25 minutes per contest.

Koloveros started the 2022-2023 season with Olympiacos, but was loaned to Lavrio on December 8, 2022.

This biographical article relating to a Greek basketball figure is a stub.