Gale will replace Lee-Anne de Bruin, who has been in the role since February 2017 and oversaw Resolute's listing on the London Stock Exchange in June.
Gale will start at Resolute on January 20 after nearly a decade with FMG. His most recent work involved developing the company's refinancing strategies to ensure a low cost, flexible, long dated debt portfolio.
Before working at FMG, Gale held senior positions at Australian conglomerate Wesfarmers, including CFO of its energy arm Wesfarmers Energy.
"Stuart's skills, and his strong relationships with debt and equity capital markets, have proven immensely valuable in his roles at FMG as has his work across complex cost and other efficiency performance programmes. These capabilities are a perfect match for Resolute's ambitions to be an innovative, multi-mine, low-cost African-focused gold miner," Resolute's MD and CEO John Welborn said in a statement.