McKibbin currently competes in the Irish Hockey League, where he plays for Lisnagarvey Hockey Club.[7][8] He has also represented the side in the Euro Hockey League, the top club competition hosted by the European Hockey Federation.[9]
He also previously competed in the German Bundesliga for Großflottbeker.[8][10]
Between 2014 and 2017, McKibbin represented the Ireland U–21 team. Appearing for the team sporadically, he made his final junior appearances at the 2017 EuroHockey U–21 Championship in Valencia, where the team finished in seventh place.[11][12]
McKibbin made his senior international debut for Ireland in 2019. He earned his first senior international cap in a test match against Scotland in Glasgow.[11]
He did not represent the team again until 2021, where he helped the team to bronze at the EuroHockey Championship II in Gniezno.[13] Since then, he has been a regular inclusion in the national squad, winning another two medals on two more occasions. He took home silver at the inaugural edition of the FIH Nations Cup in Potchefstroom in 2022, as well as gold at the 2023 edition of the EuroHockey Championship II in Dublin.[14][15][16][12]
In 2024 he helped Ireland qualify for the XXXIII Olympic Games, finishing third at the FIH Olympic Qualifiers in Valencia.[17] Later that year, he officially became an Olympian. He competed in the field hockey competition for Team Ireland at the Olympic Games in Paris.[18][19][20]
He has appeared in seasons five and six of the FIH Pro League, and has been named to represent the national team at the 2025 EuroHockey Championship II in Lousada.[11][21][22][23]
