Senior Director, Client Service

Kantar • Boston, MA

34d • $124,900 - $170,400 • Hybrid

About The Position

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.

Requirements

• 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

Nice To Haves

• advanced degree preferred

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

Benefits

• Medical plans with comprehensive, affordable coverage for a range of health services
• Health Savings Account/FSA
• Dental, Vision and benefits to cover unique healthcare needs
• Wellness Program
• 401k with match
• Tuition Reimbursement
• Commuter benefits
• Unlimited PTO

What This Job Offers

• Job Type: Full-time
• Career Level: Senior