Marketing Science Senior Director

Agency: Critical Mass Job Function: Data and Analytics Job Subfunction: Data Science and Analytics Job Description: As a Critical Mass, Sr Director, Marketing Science you will lead analytics across multiple projects within a large media account, helping teams turn paid marketing, website, customer, and performance data into a clear business direction. This is a senior leadership role for someone who can set the measurement vision, guide teams, advise senior clients, and connect analytics to real marketing decisions.   You will oversee media performance, website analytics, measurement strategy, reporting, testing, and data activation. You will also lead analytics analysts, helping them grow their skills, strengthen their client presence, and transform raw data into insights and implications for marketing execution.   You will:    Serve as the analytical counterpart to Media leadership, jointly shaping investment strategy, measurement approaches, optimization priorities, and client recommendations.   Set the analytics vision and roadmap across media performance, website analytics, measurement, and activation across several client strategies.   Lead senior client conversations around performance trends, measurement strategy, optimization opportunities, and business impact.   Partner with media, strategy, creative, technology, experience, account, and project management teams to deliver integrated, data-informed solutions.   Oversee measurement frameworks, KPIs, dashboards, testing plans, reporting approaches, and performance narratives.   Connect media performance, website behavior, customer journeys, and business outcomes into a clear view of marketing effectiveness.   Translate complex analyses into executive-level narratives that influence client investment decisions.   Identify opportunities to improve campaign performance, digital experiences, personalization, testing, and customer engagement.   Lead analytics analysts, including staffing, prioritization, coaching, quality control, career development, and performance management.   Establish standards for analytical rigor, data quality, reporting consistency, and executive-ready deliverables.   Manage competing priorities across projects while keeping teams focused, organized, and clear on what matters most.   Build strong relationships with senior clients, internal discipline leads, and cross-agency partners.   Stay current on marketing analytics, media measurement, privacy, first-party data, AI, automation, and emerging measurement approaches.   You have:    10+ years of experience in marketing, analytics, media, digital, consulting, or related field.   5+ years of experience leading analytics or measurement teams, including direct people management and career development.   Experience overseeing analytics across multiple accounts, brands, business units, or stakeholder groups.   Deep understanding of paid media planning, buying, optimization,…