He currently plays for FC Rapperswil-Jona, wearing the number 28 shirt. He plays primarily as a Defender. His current market value is estimated at 250K €.

His most recent move was a from Lausanne Sports U21 to FC Rapperswil-Jona on 2024-07-12.

Throughout the Switzerland Challenge League 2025-2026, joseph ambassa featured in 17 matches, averaging 0.2 tackles, 0 interceptions, and 0.2 clearances per game, while blocking 0 shots per game.