Etienne and his partner Tim Baillie won two bronze medals in the C2 team event at the ICF Canoe Slalom World Championships (2009, 2011). They also won a bronze medal in the C2 event at the 2009 European Championships at the Holme Pierrepont National Watersports Centre, Nottingham, England and came in fourth place at the 2009 ICF Canoe Slalom World Championships in La Seu d'Urgell. They won another silver and a bronze in the C2 team event at the European Championships alongside the other UK boats of David Florence/Richard Hounslow and Daniel Goddard/Colin Radmore. In 2012 they were a part of the British team that won gold at the European Championships in Augsburg in the C2 team event. They are British Premier Division Champions and British Open Champions.