Harley hails from Gidgegannup, Western Australia. He has a Bachelor of Music Theatre from the Elder Conservatorium of Music, and a Diploma of Musical Theatre from the Western Australian Academy of Performing Arts.

Harley spent 2023 as a Vocalist at Universal Studios Japan. Since moving to Victoria in 2024, he has played Princeton in Avenue Q (AG Theatre), and toured twice with Perform Education. Other previous credits include Featured Soloist in Retro FM (Festival Statesman Chorus) at the Adelaide Fringe Festival, and Elliot in The Killdeer (dir. Tay Broadley) at Perth Fringe.

He also has a deep love for music, having played guitar, saxophone, and percussion throughout his life.