Effectiveness Senior Manager (Marketing Science) in London

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.

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.

• 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.

• 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.
• Partner closely with the Channel Development team to ensure measurement solutions align with client needs and cover all channels across WPP Media Solutions.
• Contribute to broader initiatives within the Marketing Science team when required.

Required Skills

The role requires strong analytical and storytelling skills, along with the ability to manage multiple projects simultaneously and collaborate effectively with stakeholders.

• Analytical & Technical Skills

• Strong experience interpreting campaign effectiveness data and connecting insights into compelling narratives.
• Comfortable manipulating datasets and drawing actionable insights.
• Experience with data visualisation tools such as Tableau, Looker, or Google Data Studio.
• Relevant experience in the media landscape, particularly across biddable channels.

• Proven track record of delivering impactful presentations to stakeholders.
• Excellent communication skills, with the ability to translate complex data into clear, actionable recommendations.
• Strong collaboration skills, working effectively with internal and external partners.

• Rigorous attention to detail, with the ability to identify and correct issues before they escalate.
• Experience managing multiple projects simultaneously in a fast-paced environment.
• Ability to manage external partner relationships and ensure successful project delivery.

• Ability to connect campaign outcomes to broader business objectives, enabling smarter planning and optimisation.
• Flexible and creative mindset, capable of turning challenges into business opportunities.
• Determination and curiosity, with a proactive attitude towards continuous learning and improvement.

Desirable Skills (Not Essential)

• Familiarity with campaign effectiveness and measurement techniques such as reach & frequency modelling, incrementality testing, A/B testing, creative testing, MMM, or attribution modelling (modelling experience preferred but not mandatory).
• Experience working across multiple MarTech platforms (DSPs, ad servers, analytics tools).

Life at WPP Media & Benefits

Our passion for shaping the next era of media includes investing in our employees to help them do their best work, and we’re just as committed to employee growth as we are to responsible media investment. WPP Media employees can tap into the global WPP Media & WPP networks to pursue their passions, grow their networks, and learn at the cutting edge of marketing and advertising. We have a variety of employee resource groups and host frequent in-office events showcasing team wins, sharing thought leadership, and celebrating holidays and milestone events. Our benefits include competitive medical, group retirement plans, vision, and dental insurance, significant paid time off, preferential partner discounts, and employee mental health awareness days.

WPP Media is an equal opportunity employer and considers applicants for all positions without discrimination or regard to characteristics. We are committed to fostering a culture of respect in which everyone feels they belong and has the same opportunities to progress in their careers.

We believe the best work happens when we're together, fostering creativity, collaboration, and connection. That's why we’ve adopted a hybrid approach, with teams in the office around four days a week. If you require accommodations or flexibility, please discuss this with the hiring team during the interview process.

Please note this is a UK based role and requires individuals to have the right to work in this location.