He is on the books of Fylkir and wears shirt number 70. His main role on the pitch is Forward. His estimated market valuation currently stands at 25K €.

His latest transfer saw him join Fylkir from UMF Selfoss via Free on 2024-02-01.

During the Iceland 1. Deild Karla 2025 campaign, gudmundur tyrfingsson made 17 appearances, scoring 2 goals and adding 1 assists. He averaged 0.1 goals per match from 0 shots, with 0 on target.