Harlen made his debut for the Cronulla-Sutherland Sharks in 2006. Although contracted to the
Wests Tigers for the 2008 season he did not play in the first-grade team. Harlen was released mid-season to play for the
Northern Pride in the
Queensland Cup competition. He made his debut for the North Queensland Cowboys against the
Brisbane Broncos in Round 19, 2008 after being called up from the Northern Pride in the Queensland Cup competition. He returned to the Cronulla-Sutherland Sharks in 2010 and played a further three more NRL Games. After being unsigned by the Cronulla outfit in 2010, Harlen returned to the Queensland Cup with the Northern Pride. Harlen represented the QLD residents side in 2011 after strong performances with the Northern Pride. In 2012, North Queensland signed the front rower on a one-year deal. Harlen retired midway through the 2012 season due to an ongoing knee injury. == Career highlights ==