This looks a Tropical Orb Weaver (Eriophora sp.)
I agree. There are three Eriophora species with significant ranges in Australia, according to the World Spider Catalog. This might be Eriophora biapictata. https://www.google.com/search?q=eriophora+biapicata&hl=en-US&source=lnms&tbm=isch&sa=X&ved=2ahUKEwippdfK77rsAhXej3IEHYx4CEUQ_AUoAXoECBMQAw&biw=799&bih=1025&dpr=2
This looks a Tropical Orb Weaver (Eriophora sp.)
I agree. There are three Eriophora species with significant ranges in Australia, according to the World Spider Catalog. This might be Eriophora biapictata. https://www.google.com/search?q=eriophora+biapicata&hl=en-US&source=lnms&tbm=isch&sa=X&ved=2ahUKEwippdfK77rsAhXej3IEHYx4CEUQ_AUoAXoECBMQAw&biw=799&bih=1025&dpr=2