Leading Armenian junior national team weightlifter in the 79 kg class.
On May 5, 2026 in Ismailia, Egypt, Mkrtchyan won Junior World Championship silver with a 336 kg total (151+186) — Armenia's first 'big' medal of the tournament. Egypt's Abdelrahman Hamuda took gold (341 kg).
Silver medalist of the 2025 European U20 Championships (Durrës, 338 kg).