Born in Belgium while his father, former Australian international soccer player
Paul Okon was playing for
Belgian Pro League club
K.V. Oostende, Okon-Engstler moved to Australia in 2006 when his father signed for the
Newcastle Jets. He started his career, as his father had, with
Marconi Stallions, before moving to
A-League side
Western Sydney Wanderers. He joined the Portuguese club in July 2022, signing a three-year deal. In July 2025, Okon-Engstler signed for
A-League Men side
Sydney FC on a three-year deal. His debut for the club came against
Western United in the opening round of the
2025 Australia Cup. ==International career==