Senior Director, Client Service
About the role
The Senior Director leads a strategic book of business within a broader practice portfolio, combining deep media effectiveness research expertise with senior client advisory and strong commercial acumen in partnership with client partners and sales teams. This role influences investment decisions, drives multi-year growth, and delivers insight-led strategies that shape client outcomes.
Primary Responsibilities
- Lead a set of high value client accounts with accountability for research delivery against forecasted targets, profitability, client satisfaction, and long-term growth
- Serve as a strategic advisor to senior and executive stakeholders, influencing media investment decisions and shaping measurement and learning agendas
- Lead research, ensuring best-in-class design and delivery of complex media effectiveness programs (e.g., brand lift, cross-platform measurement, attribution, ROI, segmentation)
- Translate client business challenges into scalable research frameworks that drive sustained impact across campaigns and time
- Synthesize complex, multi-source data into clear executive narratives, delivering actionable recommendations that shape decisions
- Partner with commercial teams to drive growth by expanding existing accounts and identifying new research opportunities
- Ensure operational excellence across account teams, optimizing resourcing, delivery models, and best practices to drive quality, efficiency, and scalability
- Build and lead high-performing teams, developing talent and strengthening capabilities in research, storytelling, and client leadership
- Act as a senior representative of Kantar, contributing to client leadership, industry presence, and advancement of media measurement and analytics
Essential Knowledge & Experience
- 10–15+ years of experience in market research, media analytics, or insights consulting, with significant ownership of complex client portfolios
- Deep expertise executing media effectiveness research, including brand lift, cross-platform measurement (digital, CTV, addressable, linear), and advanced methodologies (attribution, ROI, segmentation)
- Proven ability to translate complex data into clear, executive-level narratives that drive strategic decision-making and influence investment outcomes
- Demonstrated success serving as a trusted advisor to senior and executive stakeholders, shaping measurement strategy and long-term business direction
- Strong commercial acumen, with a track record of influencing partnership renewal, driving growth and delivering multi-year account plans
- Experience leading and scaling high-performing teams, including developing research talent and driving excellence across account structures
- Proven ability to deliver operational excellence at scale, optimizing resourcing, delivery models, and best practices across teams
- Excellent communication and leadership presence; able to operate effectively in fast-paced, complex client environments
- Bachelor’s degree required; advanced degree preferred
Kantar Benefits
- We provide a comprehensive, highly competitive benefits package, including Medical plans with comprehensive, affordable coverage for a range of health services
- Health Savings Account/FSADental, Vision and benefits to cover unique healthcare needs
- Wellness Program
- Tuition Reimbursement, Commuter benefits
- Unlimited PTO
Why join Kantar?
We shape the brands of tomorrow by better understanding people everywhere. By understanding people, we can understand what drives their decisions, actions, and aspirations on a global scale. And by amplifying our in-depth expertise of human understanding alongside ground-breaking technology, we can help brands find concrete insights that will help them succeed in our fast-paced, ever shifting world. And because we know people, we like to make sure our own people are being looked after as well. Equality of opportunity for everyone is our highest priority and we support our colleagues to work in a way that supports their health and wellbeing. While we encourage teams to spend part of their working week in the office, we understand no one size fits all; our approach is flexible to ensure everybody feels included, accepted, and that we can win together. We’re dedicated to creating an inclusive culture and value the diversity of our people, clients, suppliers and communities, and we encourage applications from all backgrounds and sections of society.