He currently plays for Stjarnan Gardabaer, wearing the number 24 shirt. He plays primarily as a Defender. His current market value is estimated at 50K €.

His most recent move was a Loan from Leiknir Reykjavik to Stjarnan Gardabaer on 2024-07-21.

Throughout the Iceland Besta-deild karla 2025, Sigurdur jonsson featured in 22 matches, averaging 0.3 tackles, 0.3 interceptions, and 1 clearances per game, while blocking 0 shots per game.