Senior Director, Client Service - Media

About the role

Kantar is looking for a Senior Director, Client Service, Media to lead a strategic book of business within a broader practice portfolio. The role combines deep media effectiveness research expertise with senior client advisory and strong commercial acumen, partnering with client partners and sales teams to influence investment decisions, drive multi-year growth and deliver insight-led strategies. The position is hybrid and open to candidates based in Atlanta, Boston, Chicago, New York City or Norwalk.

Key responsibilities

• Lead a set of high-value client accounts, accountable 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 such as brand lift, cross-platform measurement, attribution, ROI and 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 with actionable recommendations.
• Partner with commercial teams to expand existing accounts and identify new research opportunities.
• Ensure operational excellence across account teams, optimizing resourcing, delivery models and best practices.
• Build and lead high-performing teams, developing talent in research, storytelling and client leadership.
• Act as a senior representative of Kantar, contributing to client leadership, industry presence and the advancement of media measurement and analytics.

Required profile

• 10-15+ years of experience in market research, media analytics or insights consulting, with significant ownership of complex client portfolios.
• Bachelor's degree required; advanced degree preferred.
• Proven track record as a trusted advisor to senior executives, with a history of partnership renewals, growth and multi-year account plans.
• Experience leading and scaling teams, and delivering operational excellence at scale.

Required skills

• Media effectiveness research, including brand lift, cross-platform measurement (digital, CTV, addressable, linear), attribution, ROI and segmentation.
• Ability to turn complex data into clear, executive-level narratives.
• Strong commercial acumen and leadership presence in fast-paced client environments.

What we offer

• Salary range of $135,000-$165,000 USD annually, depending on location, experience and other factors.
• Medical plans, Health Savings Account/FSA, dental and vision coverage.
• Wellness program and 401k with match.
• Tuition reimbursement, commuter benefits and unlimited PTO.