Brondello grew up in Mackay, Queensland, where her parents had a sugar cane farm. At the age of 9, she started to play basketball in a grass court her father built in the backyard Brondello's career began in Australia's Women's National Basketball League, where she was named the Australian Basketball Player of the Year in 1992. Brondello played for 10 seasons in the WNBL, reaching the playoffs on three occasions and being named Most Valuable Player in 1995 as a member of the Brisbane Blazers. She also played between 1992 and 2002 in Germany for BTV Wuppertal, winning ten national championships and the 1995–96 FIBA Women's European Champions Cup.