George, from Bettystown, Co Meath, beat off stiff competition from thousands of applicants to make it to the final 50 earlier this year.
Despite a strong campaign and thousands of votes George missed out on the wildcard choice, coming third in the voting.
However, despite this he managed to impress the judges and was chosen for the final round.
Now he is battling against, among others, a DJ from India, a journalist from Canada and a German actress for the job as caretaker of Hamilton Island in Australia.
The winner will be paid €75,000 for the six-month assignment which will entail exploring and relaxing on the luxury island in the Great Barrier Reef while writing a blog to promote the area.
Nearly 35,000 people from across the world applied for the job. All 16 hopefuls will be flown to Hamilton Island early next month for formal interviews.
The winner will be announced on May 6, with the job set to begin July 1.