Senior Experimentation Manager (Hiring Immediately)

Who We Are

VML, part of WPP, is a leading creative company that combines brand experience, customer experience, and commerce, creating connected brands to drive growth. VML is celebrated for its innovative and human first, award-winning work for blue chip client partners including AstraZeneca, Colgate-Palmolive, Dell, Ford, Microsoft, Nestlé, The Coca-Cola Company, and Wendy's. The agency is recognized by the Forrester Wave™ Reports, as a Leader among Marketing Creative and Content Service Providers, Commerce Services, Global Digital Experience Services, Global Marketing Services and, most recently, Marketing Measurement & Optimization. In addition, VML’s specialist health network, VML Health, is one of the world’s largest and most awarded health agencies. VML’s global network is powered by 26,000 talented people across 55+ markets, with principal offices in Kansas City, New York, Detroit, London, São Paulo, Shanghai, Singapore, and Sydney.

About WPP

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. For more information, visit .

We are seeking a highly organised and detail-oriented Senior Experimentation Manager to drive the hands-on delivery and execution of our client's experimentation-led growth initiatives. This role is responsible for the precise implementation of defined optimisation strategies, ensuring experiments are set up correctly, run efficiently, and deliver reliable data. You will operate with a high degree of granularity, directly executing within and contributing to the refinement of the experimentation framework established by the Experimentation Lead. Your primary focus will be on the flawless execution of experiments and the reliable delivery of results to ensure measurable business impact through a systematic, data-driven approach.

What you’ll be doing:

Execution of Global Experimentation Activities:

• Manage the day-to-day operations and execute the tactical direction for the client's global testing roadmap, ensuring experiments are launched and monitored effectively.

• Utilise your understanding of the client's business landscape and challenges to support the execution of high-impact, experimentation-based growth opportunities identified by the Experimentation Lead.

• Manage project timelines, dependencies, and resources specific to experimentation initiatives, ensuring the successful, on-schedule, and in-scope delivery of tests and learning agendas.

• Execute resource allocation for experiments, monitor testing throughput, and rigorously track the Return on Investment (ROI) of experimentation within established guidelines.

• Prepare and provide comprehensive performance reporting on experimentation outcomes and insights for the Experimentation Lead and relevant stakeholders.

• Maintain robust relationships with client stakeholders, focusing on clear communication regarding experimentation planning, execution status, and results across global regions.

Experimentation Implementation & Operations:

• Apply the principles of Experimentation-Led Growth (ELG) across the organisation through practical, hands-on application, fostering a mindset of continuous learning and data-driven execution.

• Execute within and contribute to the continuous refinement of the comprehensive ELG framework, methodologies, and best practices, as directed by the Experimentation Lead.

• Collaborate with cross-functional teams to meticulously design, configure, execute, and rigorously analyse experiments that drive key business metrics.

• Operate and contribute to scaling the infrastructure for continuous testing, learning, and iteration, focusing on efficiency and velocity of experiment delivery.