He currently plays for Kjelsas, wearing the number 16 shirt. He plays primarily as a Defender.

His most recent move was a from Kjelsas to IF Fløya on 2025-07-08.

Throughout the Norwegian 2.Divisjon 2025, sebastian ottesen featured in 4 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.