The 20-year-old has played at the back for Killie this season since joining from the Hoops in August.
And he could make his Socceroos debut next month when Australia face France in Paris and Canada in London, with the Aussies already having secured their place at next summer's Brazil World Cup.
Aussie manager Holger Osieck said: "We want to have a look at some other players who could make an impact with us in the future.
"We will probably use an experienced team against France, but I would expect to use some of the new players against Canada."
Irvine is also eligible to play for Scotland because his father is from Aberdeen and played for the Scots Under 19s.
But he has always maintained he would choose Australia if they call him up and has now been give his chance after impressing for them in the U20 World Cup in Turkey this summer.
Last year, he explained why he opted for the Socceroos over the Scots.
He said: "It was a very hard decision and there have been a few mix-ups. It has been said I was born in Aberdeen but it was my father who was born there.
"I was born in Melbourne, grew up in Melbourne and moved here when I was 17.
"I grew up wanting to play for Australia, but coming here I have always had a massive connection with the Scottish side of the family.
"When it comes down to it I wanted to play for the Socceroos. That's where my allegiances lie."