Assembly Appoints Jason Lim as Chief Media Officer for North America in Groundbreaking Move
Assembly, a prominent global media agency, has made headlines with the appointment of Jason Lim as its inaugural Chief Media Officer for North America, effective immediately. This groundbreaking move, announced on May 6, 2025, signifies Assembly's dedication to enhancing its media expertise and driving innovative strategies in an ever-evolving landscape.
Based out of Assembly's bustling New York City office, Lim will be reporting directly to the North America CEO, Jill Kelly. In this pivotal role, Lim is tasked with overseeing a diverse team of over 350 channel experts, encompassing areas such as Search, Social, Programmatic, Video, Search Engine Optimization (SEO), Affiliate Marketing, Customer Relationship Management (CRM), Out-of-Home (OOH), Print, and much more. This multitude of channels positions Lim to manage media planning and investments effectively across various platforms.
Lim's experience spans more than two decades in the agency sector, with his most recent position being Chief Planning Officer at EssenceMediacom. His extensive background is not only a testament to his capabilities but also to Assembly's ongoing commitment to building a team of top-tier media professionals, further establishing best-in-class omnichannel activations across the industry.
"Jason is a rare leader who seamlessly blends data-driven, brand performance expertise with storytelling instincts," stated Jill Kelly. She expressed immense confidence in Lim's abilities, highlighting his duality as both a practitioner and a builder—a trait that resonates with Assembly's core values.
In his own words, Lim conveyed his enthusiasm about joining Assembly, especially at a time when the definitions and applications of media are rapidly evolving. He acknowledged that the team’s commitment to innovation, cultural understanding, and measurable growth is a necessary combination for modern brands seeking to make an impact in today's marketplace.
Lim's role will be crucial in enhancing Assembly's esteemed Experience Activation practice. He will work towards setting operational standards, fueling media solution innovation, and spearheading campaigns that resonate deeply with clients and target audiences alike. Under his leadership, the goal is to deliver groundbreaking brand and performance campaigns that not only meet but exceed client expectations.
This noteworthy appointment follows a series of progressive developments for Assembly North America, which recently celebrated its selection as the Global Agency of Record for World of Hyatt. Additionally, the agency has seen strategic leadership reforms with the onboarding of Jill Kelly as North America CEO and Ilana Casser as EVP of Growth for the region.
Assembly’s holistic approach aims to intertwine compelling brand narratives with a robust suite of global media capabilities. With a group of over 2,300 professionals across 35 offices globally, the company is not just focused on driving performance but also committed to creating a significant social and environmental impact in the advertising realm. Assembly operates under the banner of Stagwell (NASDAQ STGW), positioning itself as a challenger network intent on transforming marketing as we know it.
In conclusion, Jason Lim's appointment as the Chief Media Officer for North America at Assembly signals a transformative phase for the agency. His unique blend of extensive experience and innovative thinking promises to guide Assembly in reshaping media experiences and forging lasting impacts for brands in a competitive landscape. As the media culture continues its rapid evolution, Lim's leadership will undoubtedly contribute to Assembly's growth trajectory and strategic vision in the realm of global media operations.
Based out of Assembly's bustling New York City office, Lim will be reporting directly to the North America CEO, Jill Kelly. In this pivotal role, Lim is tasked with overseeing a diverse team of over 350 channel experts, encompassing areas such as Search, Social, Programmatic, Video, Search Engine Optimization (SEO), Affiliate Marketing, Customer Relationship Management (CRM), Out-of-Home (OOH), Print, and much more. This multitude of channels positions Lim to manage media planning and investments effectively across various platforms.
Lim's experience spans more than two decades in the agency sector, with his most recent position being Chief Planning Officer at EssenceMediacom. His extensive background is not only a testament to his capabilities but also to Assembly's ongoing commitment to building a team of top-tier media professionals, further establishing best-in-class omnichannel activations across the industry.
"Jason is a rare leader who seamlessly blends data-driven, brand performance expertise with storytelling instincts," stated Jill Kelly. She expressed immense confidence in Lim's abilities, highlighting his duality as both a practitioner and a builder—a trait that resonates with Assembly's core values.
In his own words, Lim conveyed his enthusiasm about joining Assembly, especially at a time when the definitions and applications of media are rapidly evolving. He acknowledged that the team’s commitment to innovation, cultural understanding, and measurable growth is a necessary combination for modern brands seeking to make an impact in today's marketplace.
Lim's role will be crucial in enhancing Assembly's esteemed Experience Activation practice. He will work towards setting operational standards, fueling media solution innovation, and spearheading campaigns that resonate deeply with clients and target audiences alike. Under his leadership, the goal is to deliver groundbreaking brand and performance campaigns that not only meet but exceed client expectations.
This noteworthy appointment follows a series of progressive developments for Assembly North America, which recently celebrated its selection as the Global Agency of Record for World of Hyatt. Additionally, the agency has seen strategic leadership reforms with the onboarding of Jill Kelly as North America CEO and Ilana Casser as EVP of Growth for the region.
Assembly’s holistic approach aims to intertwine compelling brand narratives with a robust suite of global media capabilities. With a group of over 2,300 professionals across 35 offices globally, the company is not just focused on driving performance but also committed to creating a significant social and environmental impact in the advertising realm. Assembly operates under the banner of Stagwell (NASDAQ STGW), positioning itself as a challenger network intent on transforming marketing as we know it.
In conclusion, Jason Lim's appointment as the Chief Media Officer for North America at Assembly signals a transformative phase for the agency. His unique blend of extensive experience and innovative thinking promises to guide Assembly in reshaping media experiences and forging lasting impacts for brands in a competitive landscape. As the media culture continues its rapid evolution, Lim's leadership will undoubtedly contribute to Assembly's growth trajectory and strategic vision in the realm of global media operations.
Topics Entertainment & Media）
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