He is on the books of Mjondalen IF and wears shirt number 92. His main role on the pitch is Forward.

His latest transfer saw him join Mjondalen IF from Follo via on 2026-02-16.

During the Norwegian 2.Divisjon 2025 campaign, markus ottesen made 26 appearances, scoring 8 goals and adding 0 assists. He averaged 0.3 goals per match from 0 shots, with 0 on target.