The income protection specialists will place Young in charge of its strategy, communications and product development for the society.
Young, who has worked for Cirencester Friendly for four years, will report to director of sales and marketing John Bridge.
Bridge said: “Rebecca has been a key member of the marketing team at Cirencester Friendly for some time and I am thrilled to appoint her to the well-deserved position of head of marketing.
“We have ambitious plans and with Rebecca’s skills and impressive knowledge of the industry, I have no doubt we will achieve these goals.”
Young added: “I am delighted to have been promoted to head of marketing.
“With the society’s 125th anniversary next year, it is a very exciting time for the business and I look forward to working closely with John and the team.”