Senior Manager, Data Science & Marketing Effectiveness (MMM)

Senior Manager, Data Science & Marketing Effectiveness (MMM), London, UK Ekimetrics transforms how organizations make critical business decisions. Since 2006, we’ve been helping companies build sustained competitive advantage through AI-powered Managed Solutions. Our dual purpose is Competitiveness and Sustainability, because lasting leadership is built on both. Our solutions are a unique combination of people and technology. We combine our Eki.Decisions platform with embedded experts in marketing, commercial effectiveness, and data science, connecting decisions across business domains to drive real, positive, scalable, and lasting impact. With a full in-house team and offices in Paris, London, New York, Hong Kong, and Shanghai, we commit to responsibility and frugality in AI, systematically building competitive advantage, and being loyal to our values and DNA. Your responsibilities As a Senior Manager in Marketing effectiveness, you will lead multiple high-impact programs for strategic clients, manage multi-account portfolios, and drive both business growth and talent development. You will oversee teams, ensure delivery excellence, and strengthen Ekimetrics’ market position. More precisely, you will: Strategic Portfolio & Project Leadership • Lead a portfolio of strategic client projects (multi-accounts) or a major regional project under Partner supervision. • Define, steer, and monitor strategic project roadmaps leveraging Ekimetrics solutions models and standards. • Ensure robust governance: data quality, model accuracy, actionable insights, and on-time, high-value delivery. • Pilot portfolio growth, margin, costs, and ROI to meet business objectives. • Secure alignment of resources for high-quality delivery in line with Ekimetrics’ strategy. • Translate complex analytics into compelling narratives and actionable recommendations for senior stakeholders and C-suite clients. • Support clients in optimizing marketing spend, improving segmentation, enhancing campaign performance, and maximizing ROI. • Lead contributions to RFPs and pitches, reinforcing Ekimetrics’ commercial visibility. People & HR Leadership • Line manage multiple team members, overseeing performance, conducting regular 1:1s, performance reviews, and talent assessments, while ensuring high-quality delivery, profitability, and client satisfaction. • Lead HR and talent development initiatives, including annual talent reviews, career development planning, succession planning, and retention strategies, achieving retention of direct reports. • Mentor and coach managers, analysts, and junior staff, promoting knowledge sharing and developing team capabilities. • Recruit, align, and develop resources to build high-performing teams, retaining top talent. • Encourage collaboration, communication, and high engagement across squads. Account & Business Growth • Serve as the operational and strategic point of contact for key accounts, maintaining strong long-term client relationships. • Identify cross-sell and upsell opportunities and support global account growth strategies. • Contribute to the scoping and design of new projects, ensuring business cases align with Ekimetrics capabilities. • Represent Ekimetrics externally at conferences, events, and client forums. • Track and animate realized client business gains from Ekimetrics partnership, drive a narrative of program value to account stakeholders. Practice & Thought Leadership • Share and document best practices across the community to promote mastery of delivery. • Contribute to building/developing verticals, domains, or leading strategic projects locally or globally. • Contribute to upskilling strategies for office teams in client management, PMO, and project leadership. • Act as an ambass