Moraitis played from a young age with the youth teams of the Greek club Panionios, before he started his pro career.

He played at the Jordan Brand Classic's International Game in 2015, where he recorded 7 points, 1 assist, 1 block, and 1 turnover in 28 minutes.

After the departure of Taurean Green from AEK, due to an episode he had with the team's head coach, Jure Zdovc, during a 2016 Greek League playoffs game against Olympiacos, Moraitis gained some more playing time.

[7] During the 2021-22 campaign, in a total of 21 league games, he averaged 9.3 points, 3.3 rebounds, 4.5 assists and 1.2 steals, playing around 23 minutes per contest.

On June 23, 2023, Moraitis signed a three-year contract with Greek Basket League and EuroLeague powerhouse Panathinaikos.