[3][4] Hickey competed in the 2022 European Amateur Boxing Championships,[5] being awarded the bronze medal in the middleweight event.

[6] He was defeated in the semi-final by English boxer Lewis Richardson by a 4-1 judges' decision.

[8] Hickey won the gold medal in the middleweight division at the 2022 Commonwealth Games in Birmingham.Stopping Englands Lewis Richardson on the way to the final.

[10] He made his professional debut at the Copper Box Arena in London, England, on 19 October 2024,[11] defeating Colombian fighter John Henry Mosquera on points with the referee awarding him all four rounds.

[12] In his second pro-fight, Hickey stopped Lewis Howells in round one at Park Community Arena, Sheffield, England, on 11 January 2025.