Greg Egan is Australian.
Oh nice! Thank you!! Do you have a book you would highly recommend of his?
I've only started reading him. He does hard science fiction.
"Dichronauts" (2017) (finished) takes place in a universe with different laws of physics. The story itself isn't too complicated, but it is interesting. It basically shows us what life is like for a particular group of people.
"Permutation City" (1994) (halfway through) (which is Mature Audiences Only for one or two graphic sex scenes and a bit of graphic, catastrophic violence) takes place on a futuristic Earth with the main characters living in Australia (although that's incidental). It deals with much heavier themes of existence and consciousness.