Margalik began skating in 2005. His first coach was Robert O'Toole, who taught him for eight years, mainly at the Woodbine Winter Club in Toronto. Margalik's early career was hindered by
Osgood–Schlatter disease, which affected his knees. Competing on the junior level, he won the silver medal at the
2013 Canadian Championships and gold at the 2013 Mladost Trophy, his only international appearance for Canada. He changed coaches later in 2013, joining Andrei Berezintsev and Inga Zusev at the Richmond Training Centre in
Richmond Hill, Ontario. He won the national junior title at the
2014 Canadian Championships. Margalik debuted for Argentina in September 2014, placing fourth at the
ISU Junior Grand Prix in Japan. Making his senior international debut, he finished seventh at the
2014 Skate Canada Autumn Classic, a part of the
ISU Challenger Series. In February 2015, he competed at his first ISU Championship, the
Four Continents in
Seoul,
South Korea. This is the first time an Argentine skater have participated in the Four Continents Championships. This is also the first time a male skater represented Argentina in an ISU Championship. Ranked 18th in the short program, he qualified for the free skate, where he placed 15th and rose to 16th overall. At the
Junior Worlds, he achieved 12th place. In August 2015, Margalik won Argentina's first
ISU Junior Grand Prix medal, taking bronze at the
2015 JGP in
Bratislava, Slovakia. In February 2016, he placed 17th at the
Four Continents in
Taipei. In March 2016, he participated at the
World Championships in
Boston, as the first skater representing Argentina in history. Margalik announced his retirement on July 12, 2016. In a related news article, an ankle injury was cited. == Programs ==