Jackie Mason skated pairs with Mervyn Bower and they competed at the 1960 Squaw Valley Winter Olympics. They also attempted to compete in 1956, but Bower broke an ankle in training in Cortina d’Ampezzo shortly before the Games. Despite that injury they competed at the 1956 World Championships in Garmisch-Partenkirchen, although they finished last. Mason and Bower won 12 Australian pairs titles (1951-60, 1962, 1964), and in 1952 they became the first Australian couple to compete at the World Championships. They also competed at the British Championships in 1952 and 1956, placing third both times.
After their competitive days ended, Mason became an international judge, including at the 1980 Winter Olympics. In later years she spoke of the difficulty of being an Australian skater in her era, which required long sea voyages to get to international competitions. She was an inaugural inductee to the Ice Skating Australia Hall of Fame in 2004 and was made a life member of the New South Wales Ice Skating Association. She married John Kendall-Baker in July 1960, who was the manager of the Prince Alfred Park outdoor rink. Their daughter, Simone Moore, also became a top figure skater and international judge, but died in the 2007 Merinda tragedy, in which the HarbourCat ferry Pam Berridge collided with the Merinda, a pleasure cruiser, in Sydney Harbour, sinking the Merinda.