He won the gold medal in the 77 kg event at the 2018 Summer Youth Olympics held in Buenos Aires, Argentina.

[2][3] In 2019, at the European Junior & U23 Weightlifting Championships held in Bucharest, Romania, he won the bronze medal in the men's junior 81 kg Snatch event.

[1] In 2021, Margaryan won the silver medal in the men's 81 kg event at the Junior World Weightlifting Championships held in Tashkent, Uzbekistan.

[4][5] At the 2021 European Junior & U23 Weightlifting Championships in Rovaniemi, Finland, he won the gold medal in his event.

[6] He competed at the 2022 European Weightlifting Championships held in Tirana, Albania.