Club Mamageishvili entered
Saburtalo's academy at the age of six. Having come through the club's youth ranks, he played for the reserve team before making his first-team debut in the
Erovnuli Liga at the age of 18. He scored his first top-flight goal on 29 November 2021 as Saburtalo came from behind to beat
Shukura. Nine days later, Mamageishvili lifted the first trophy after his team cruised to victory over
Samgurali in the
cup final. At an annual awards ceremony organized by the
Georgian Football Federation in December 2021, Mamageishvili received the Aleksandre Chivadze silver medal for U19 players. On 7 December 2023, Saburtalo claimed another cup title following a narrow injury-time victory over
Dinamo Batumi with Mamageishvili playing full time. Overall, he took part in all five matches of Saburtalo's cup campaign this season. Both the player and his team enjoyed more successful season the next year. As the club changed its name into Iberia 1999, Mamageishvili became the league champion for the first time in his career. His performance was duly rewarded after winning nomination for the 2024 Erovnuli Liga
Midfielder of the Year award. In January 2025, Mamageishvili moved to Portuguese
Primeira Liga club
Famalicão on a four-year deal.
International Mamageishvili was fifteen years old when he was called up to the U15 team. After taking part in three
2020 UEFA under 17 Championship qualifiers in the autumn of 2019, Mamageishvili joined U19s. He played both in first and elite rounds of the
2022 UEFA European under-19 Championship qualifiers and scored a winner against
Kosovo on 9 October 2022. Mamageishvili was
among the players called up for the
U21 team which participated in
2023 UEFA European Championship co-hosted by Georgia. In 2023–24, Mamageishvili played in all ten games of Georgia's
2025 UEFA Championship qualifying campaign in addition to both
play-offs against
Croatia, in which his team prevailed on penalties. He netted in a 2–0 home win against
Gibraltar on 6 September 2023, followed by another goal in a 3–1 away loss to
Netherlands on 9 September 2024. ==Career statistics==