Marcus Liassides

Marcus Liassides is a senior media and advertising technology executive currently serving at Mattel, where he leads global media strategy and execution for one of the world's most iconic toy and entertainment brands. His work sits at the intersection of brand marketing and modern AdTech infrastructure, navigating the complexities of reaching family and children's audiences in a privacy-sensitive, rapidly evolving digital landscape. Liassides has built his career across agency and brand-side roles, developing deep expertise in programmatic advertising, digital media planning, and data-driven marketing. His trajectory reflects a broader industry shift from traditional media buying toward technology-enabled, audience-first approaches that require fluency in both creative strategy and technical platforms. At Mattel, he oversees media investments across a portfolio of globally recognized brands including Barbie, Hot Wheels, and Fisher-Price, requiring sophisticated cross-channel planning that balances digital performance with brand safety and compliance considerations unique to children's advertising. His role demands expertise in navigating COPPA regulations, contextual targeting, and the evolving identity landscape as third-party cookies phase out.

• Vice President, Global MediaCurrent

  Mattel

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