Haigh, which began in 1996 with the oars, took in Athens in 2004 together with Nicola Coles at the Olympic regatta, finishing in sixth place. 2005 won the two Kiwis at the World Cup in Munich and Lucerne, and they also won the title at the World Rowing Championships in Japan in 2005. 2006 was the fourth in Lucerne the best World Cup result of the two, at the World Rowing Championships in 2006 in Eton they finished second behind the Canadians Darcy Marquardt and Jane Rumball. 2007 won Haigh and Coles at the World Cup in Lucerne, but arrived at the World Rowing Championships 2007 in Munich only ranked fifth. A year later, the two occupied the fifth place at the Olympic Games in Beijing.
After a year's break Juliette Haigh returned in 2010 with the new partner Rebecca Scown in the World Cup back and the two won at first in Munich and Lucerne. In the home World Championships on Lake Karapiro which, about 150 kilometers from Auckland, they won the title with three seconds ahead of the British women Helen Glover and Heather Stanning. In the World Cup season 2011 Haigh and Scown won in Hamburg, but subject in Lucerne against the British women. The World Rowing Championships 2011 in Bled broke out between the British and New Zealand two to a very close decision, the Haigh and Scown with eight hundredths of a second decided for themselves. The following year, Haigh and Scown occupied at the Olympic Regatta in 2012 to third place behind the British and Australian boat.