Global Media Effectiveness Director

Overview

Dentsu is an integrated growth and transformation partner to the world’s leading organizations. Founded in 1901 in Tokyo, Japan, and now present in over 145 countries and regions, it has a proven track record of nurturing and developing innovations, combining the talents of its global network of leadership brands to develop impactful and integrated growth solutions for clients. Dentsu delivers end-to-end experience transformation (EX) by integrating its services across Media, CXM and Creative, while its business transformation (BX) mindset pushes the boundaries of transformation and sustainable growth for brands, people and society.

iProspect is an important part of our world-class offering - a global digital-first end-to-end media agency. Its unmatched mix of media strategy and storytelling with digital expertise and audience knowledge defines the new territory of performance-driven brand building. By delivering human-centric solutions, iProspect accelerates growth for the world’s most iconic brands. The iProspect team works across a network of more than 8,000 media and performance specialists spread across 93 global markets.

We’re hiring for a Global Media Effectiveness Director as part of iProspect Global, based in Munich (part time hybrid option).

Purpose of the Role

We are seeking a senior leader in media effectiveness to drive the strategic development and implementation of robust measurement, testing, and optimization frameworks for a global, innovative automotive client. This individual will collaborate closely with client stakeholders, media and data specialists, and regional teams to embed a culture of insight-driven decision-making across the organization. The role plays a critical part in influencing media investment strategy, championing change management around measurement maturity, and building scalable effectiveness practices that connect marketing performance to business growth.

Role Overview

As a Global Media Effectiveness Director, you will be accountable for the delivery of media measurement strategies that guide performance optimization and organizational learning. This role requires a proven ability to shape learning agendas, experimentation initiatives, build business cases for media investment and drive adoption across global and regional teams. You will partner cross-functionally to champion innovation in measurement, ensure methodological rigor, and lead the integration of insights into marketing and media planning cycles. This is a highly visible and strategic role, ideal for a seasoned professional ready to lead transformation in a fast-paced environment.

Key Responsibilities

• Lead the development and implementation of global effectiveness frameworks aligned to full-funnel KPIs—from brand awareness and engagement to pipeline impact and customer value.
• Shape and operationalize strategic learning agendas that prioritize measurement questions tied to business outcomes, and influence annual testing plans accordingly.
• Build compelling methodologies to create business cases for recommended media investment
• Oversee performance synthesis across digital and offline channels to derive strategic insights and optimization recommendations.
• Drive adoption of measurement best practices across regional and local teams through capability-building, governance models, and change enablement support.
• Partner with clients, partners, platform specialists and data science teams to design and deploy rigorous measurement techniques—including A/B testing, geo-experiments, MMM, and brand lift studies.
• Collaborate with data and technology teams to ensure the integration and adoption of effectiveness tools within dentsu’s operating system
• Stay at the forefront of media measurement innovation, bringing thought leadership on evolving methodologies, new partnership opportunities, privacy implications, and performance frameworks.
• Lead and support a small team of direct and indirect team members.

Qualifications And Skills

• Significant experience in media effectiveness, marketing analytics, or data strategy within a global agency, consultancy, or client-side environment.
• Deep understanding of media performance metrics across the entire marketing funnel and their connection to commercial outcomes (e.g., CAC, LTV, ROAS, NPS, brand equity).
• Proven success in leading multi-market measurement transformation initiatives and driving stakeholder alignment across global organizations.
• Strong strategic thinking and storytelling capabilities—able to translate complex datasets into clear business narratives and influence senior stakeholders.
• Demonstrated experience with change management, capability building, and scaling measurement maturity across diverse teams and geographies.
• Experience with tools such as SQL, Power BI, LookerStudio, Tableau, and statistical software (e.g., R, Python) is a strong advantage.
• Strong knowledge of platforms such as GA4, DV360, Nielsen, Meta Ads Manager, and advanced measurement methodologies.
• Exceptional communication, facilitation, and leadership skills with a collaborative, solutions-oriented mindset.

Additional Information

Global Reach with Local Expertise: Join a network that spans 145 countries, with over 70,000 talented employees. Collaborate with bright minds worldwide and gain insights from diverse industries and markets.

Innovation at Our Core: For over 120 years, we have been pushing boundaries to connect brands with their audiences through cutting-edge technology, creativity, and transformative solutions.

Commitment to Impact: We focus on driving meaningful outcomes for our clients and their communities, whether through increasing revenue, influencing behavior change, or fostering positive organizational culture.

Collaborative Network: Work alongside six global brands all united in delivering highly integrated and scaled transformation solutions.

Location

München - Leopoldstrasse 150

Brand

Global iProspect

Time Type

Full time

Contract Type

Permanent

Seniority level

• Director

Employment type

• Full-time

Job function

• Marketing and Sales

Industries

• Advertising Services