Roussil arrives at Mistplay following a four-year tenure at Liftoff Mobile. During his time as Senior Vice President of Strategic Finance there, he played a central role in navigating the company through a $4.3 billion investment by General Atlantic and a subsequent public listing valued at $5.4 billion. His background also includes a six-year stint at Activision Blizzard, where he served as Vice President of Corporate FP&A and led investor relations efforts.

Mistplay CEO Tricia Han highlighted Roussil’s specialized experience in scaling high-growth firms as a primary catalyst for the hire. For his part, Roussil emphasized the potential of Mistplay’s transition into a broader network model, noting that the platform's ability to drive rewarded engagement offers a distinct advantage for both publishers and consumers. He will now oversee the company’s financial operations, aiming to solidify its market position following its recognition as a top Global Scaled Ad Partner in the 2025 Singular ROI Index.