From 2007 to 2012 Bertrand was selected to represent Victoria in the men's lightweight four contesting the Penrith Cup at the Interstate Regatta within the Australian Rowing Championships.

[3] Bertrand first represented Australia at the 2007 World Rowing U23 Championships in Glasgow in a lightweight coxless four who placed ninth.

[1] In 2010 at the World Championships in Lake Karapiro, Bertrand was seated at seven in the Australian men's lightweight eight who placed second and won the silver medal.

[1] The lightweight eight stayed together into 2011 with the changeout of Perry Ward and Angus Tyers for Rod Chisolm and Tom Gibson and a move of Darryn Purcell into the stroke seat.

They raced their final to perfection coming through the field from the 500mark, sitting second at the 1000 and the 1500, and running down the Italians in the last 200m to take the gold by 0.17seconds, winning Bertrand his first World Championship title.