In 2016 Pantemis joined FC Montreal, the reserve team of the Montreal Impact in the United Soccer League. He made his professional debut on May 2, 2016, in a 1–0 defeat to Orlando City II, and also featured in a 2–1 defeat to Bethlehem Steel on May 15, 2016.[6] He played two games for FC Montreal after tearing his LCL in June 2016, and was still injured when the club ceased operations after the 2016 season, leaving him unattached for until he signed with the Impact.[7]
Montreal Impact / CF Montréal
After recovering from his LCL injury, Pantemis would train with Serie A club Bologna in September 2017,[8][9] and would sign a first team contract with Montreal Impact in November 2017.[10] He made his competitive debut for the Impact on July 24, 2019, in a Canadian Championship match against York9 with the Impact winning 1-0.[11]
After the 2022 MLS season, where Pantemis split starting duties with Sebastian Breza, his option was initially declined by CF Montréal.[14] Pantemis then signed new one-year deal with the club, with an options for 2024 and 2025.[15] Upon completion of the 2023 Season, CF Montréal would announce that they would not pick up Pantemis' contract for 2024, ending his time with the club.[16]
Pantemis was a part of Canada's U-20 program and made his start in a 2–1 victory over England.[4] In May 2018, Pantemis was named to Canada's under-21 squad for the 2018 Toulon Tournament.[18] In February 2020 Pantemis was named to the provisional roster for the Canadian U-23 team ahead of the 2020 CONCACAF Men's Olympic Qualifying Championship.[19] He was named to the final squad on March 10, 2021.[20]
Senior
In June 2017, he was called up to the Canadian senior national team for a friendly against Curaçao, but did not appear. He was subsequently called up for a friendly against Jamaica in September of that year.[4]