King has appointed Hope Cochran as chief financial offer amidst speculation it has filed for an IPO in the US.
Cochran previously worked at telecoms operator Clearwire Inc in a similar role.
The new King exec has also previously worked at companies such as professional services firm Deloitte and Touche, Evant and PeopleSoft.
Her appointment comes as King is said to have quietly filed for its initial public offering in the US, expected to value the firm at $5 billion.
“We’re thrilled that Hope is joining us,” said King CEO Riccardo Zacconi.
“She has an exceptional track record of helping to manage fast-growing and entrepreneurial companies and as King continues to grow, we know she’ll be a great addition to the team.”
Cochran added: “I am excited to be able to join King and the team at this point in its journey. King has had a long track record of success and I look forward to embarking on this next phase with their proven and dynamic management team.”