At the international level, he represents Saint Vincent and the Grenadines. He plays primarily as a Defender. His preferred foot is Right.

His most recent move was a from Cornell Big Red (Cornell University) to Charlotte FC on 2025-12-17.

Throughout the FIFA World Cup qualification (CONCACAF) 2026, Andrew Johnson featured in 2 matches, averaging 2 tackles, 1 interceptions, and 3.5 clearances per game, while blocking 0 shots per game.