He is on the books of Salon Palloilijat and wears shirt number 13. His main role on the pitch is Midfield.

His latest transfer saw him join Salon Palloilijat from Lahti via on 2026-02-09.

Over 19 appearances in the Finnish Ykkonen 2025, Jasper kostian contributed 2 goals and 0 assists, completed 0 key passes from 0 total passes, and posted a passing accuracy of -.