At the international level, he represents Armenia U19. He plays primarily as a Midfield. His preferred foot is Right. His current market value is estimated at 125K €.

His most recent move was a Loan from FC Van to Pyunik B on 2026-06-29.

Across 1 appearances in the Armenian Cup 2025-2026, Hayk tatosyan registered 0 goals and 0 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.