Adam Demos was born in Wollongong, a city on the coast of New South Wales, Australia.  Demos grew up on a hobby farm with his family and graduated from Dapto High School in 2003, a school focused on rugby. He also attended the film and television school Screenwise.

Demos was a construction worker in his hometown. He joined his father in the demolition business in his teens and continued even after high school. Where he came from, acting wasn’t really a part of their lifestyle. 

Demos is best known for his role as Jake on the Netflix film Falling Inn Love,  August Walker on the American television series UnREAL and Nate Baldwin on Australian television series Janet King.