Effectiveness Senior Manager (Marketing Science)

About WPP Media WPP is the trusted growth partner for the world’s leading brands. With exceptional talent, trusted data and intelligence, and world-class partnerships – all united by our pioneering agentic marketing platform, WPP Open – we help clients navigate change, capture opportunity, and deliver transformational growth. WPP Media is WPP's AI-driven media operating unit, bringing together media, data, and partnerships to deliver creative personalisation at scale. Connected through WPP Open and powered by Open Intelligence, clients see exactly where, how, and why their media investment is working. For more information, visit wppmedia.com . About WPP Media WPP is the creative transformation company. We use the power of creativity to build better futures for our people, planet, clients and communities. For more information, visit wpp.com. WPP Media is WPP’s global media collective. In a world where media is everywhere and in everything, we bring the best platform, people, and partners together to create limitless opportunities for growth. For more information, visit wppmedia.com At WPP Media, we believe in the power of our culture and our people. It’s what elevates us to deliver exceptional experiences for both our clients and each other. In this role it will be critical to embrace WPP & WPP Media’s shared core values: Be Extraordinary by Leading Collectively to Inspire transformational Creativity. Create an Open environment by Balancing People and Client Experiences by Cultivating Trust . Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise . Role Summary and Impact We are seeking an exceptional Effectiveness Senior Manager to join WPP Media Solutions’ UK Marketing Science team. Reporting into the Associate Director, Insight & Effectiveness, this role will play a pivotal part in shaping the way we measure success for both individual client campaigns and WPP Media as a whole. The successful candidate will turn rich effectiveness evidence (brand, performance, A/B tests, MMM/attribution signals) and media delivery data into clear, actionable stories about how we perform—by client, channel, audience, and creative. You will own the insights layer that connects campaign outcomes to business outcomes, guiding smarter planning, sharper optimisation, and stronger commercial performance. This is a strategic, hybrid London-based role requiring analytical thinking, storytelling skills, and the ability to collaborate across teams and stakeholders. Responsibilities As an Insights & Effectiveness Senior Manager, you will play a key role in delivering high-quality insights, shaping measurement strategies, and supporting the development of WPP Media Solutions’ insight generation. Key responsibilities include: Campaign Effectiveness Evangelise our measurement offering and advocate for the appropriate use of our suite of measurement tools across client campaigns. Collaborate with Media Planning, Channel Development, and Activation teams to shape the right measurement strategy and implementation aligned with campaign objectives and target audiences. Support in synthesising findings from measurement solutions into learnings that can be shared across the business and feed into future campaign planning. Analytics Support analysts in the Marketing Science team to develop new insights capabilities, such as identifying leading indicators of performance, attribution modelling, and developing MMM solutions. Provide input into the measurement roadmap and collaborate with internal teams to identify areas for innovation and development. Lead analysis workstreams to aggregate findings from effectiveness studies, transforming them into quantifiable value produced for clients Projects & Process Manage relationships with external measurement and research partners, ensuring smooth project delivery and clear communication of key outcomes. Collaborate on go-to-market implementation for new or enhanced measurement solutions. Part…