He is on the books of UMF Njardvik and wears shirt number 3. His main role on the pitch is Defender. His estimated market valuation currently stands at 100K €.

His latest transfer saw him join UMF Njardvik from Haukar Hafnarfjordur via Free on 2022-02-17.

Across the Iceland 1. Deild Karla 2025, sigujon markusson appeared in 22 matches and averaged 0 tackles, 0 interceptions, 0 clearances, and 0 blocked shots per game.