The co-founder and chief executive of digital consultancy Escient, Steve Mabbs, will retire by the end of June.
In place of Mabbs, Rebecca Campbell-Burns will take on the chief executive role.
Escient is a Fast50 company, founded in Adelaide in 2016.
Campbell-Burns has been with the company since 2017, with her current role being managing director.
Over the past eight years, the company has grown to a team of 160, across four states.
"I’d like to congratulate Rebecca Campbell-Burns who will be my successor as our next CEO," the co-founder said.
Mabbs will continue at Escient as a director, and move to become a chairman over the next few months.