 At the Australian Institute of Sport in 1993 Jahrling was initially paired with Nick Porzig and they won their early 5 km time trials beating other combinations of their cohort.Nevertheless, coach Reinhold Batschi changed out the combination and paired Porzig with Jaime Fernandez.Jahrling's Australian representative debut was in 1993 in a coxed four which rowed to a fifth placing at the 1993 World Rowing Championships in Racice.