Geelong (2014–2015) Jansen was drafted in the
2013 AFL draft by , but he didn't play a game in the two seasons he spent there. He was drafted as a strong-bodied inside midfielder with the ability to go forwards, and spent his entire time with the club playing in the VFL. He lost weight in his time at the club to help him cover the ground more easily, but he was unable to force his way into the star-studded Geelong midfield.
Brisbane Lions (2016–2017) Jansen was traded to the Brisbane Lions for the 2016 season. He played his first game in round 11 of the
2016 season against
Carlton and played seven games for the season, struggling for consistency. ==Statistics==