Director, International MROI Data Science Lead in Surrey

Do you want to make an impact on patient health around the world? Do you thrive in a fast-paced environment that brings together scientific, clinical and commercial domains through data and analytics? Pfizer is seeking a senior leader in Data Science to build and lead a best-in-class team focused on Marketing Mix Modeling (MMM) within commercial analytics. This role is responsible for hands-on development and deployment of MMM solutions, driving actionable insights for marketing optimization and ROI. The ideal candidate combines deep technical expertise in MMM with a consulting background, enabling strategic influence across multiple markets and business units. You will collaborate cross-functionally to empower data-driven decision-making, accelerate marketing transformation, and deliver measurable business impact.

ROLE RESPONSIBILITIES

• This role is accountable for delivering data science driven insights & solutions and will partner with senior functional leads for across Commercial analytics to develop and implement models, insights, and data products that drive brands’ strategic priorities.
• Lead end to end design, implementation, and refinement of marketing mix models to measure and optimize the effectiveness of marketing channels and tactics (DTC, HCP paid media, emerging platforms).
• Lead the evolution of analytics methods and processes for Promotion Impact Analytics, Resource Allocation & Optimization at the enterprise level via both technology and process enhancements.
• Build, validate, and deploy econometric and machine learning models (regression, time series, Bayesian, causal inference) for marketing ROI analysis and budget allocation.
• Partner with marketing, media, agencies and commercial teams to evaluate campaign performance, forecast outcomes, and recommend strategic investments.
• Develop and oversee A/B tests, incrementality studies, and causal inference approaches to validate marketing impact.
• Ensure robust data pipelines, data quality, and governance for marketing analytics datasets.
• Lead cross functional team of data scientists & data engineers fostering innovation, technical excellence, and continuous learning.
• Present insights and recommendations to senior stakeholders in clear, actionable formats.
• Drive adoption of advanced MMM methodologies, including ad-stock, saturation, and response curve modeling.
• Stay abreast of latest MMM tools, platforms, and industry best practices.

BASIC QUALIFICATIONS

• Extensive relevant experience in data science/advanced analytics, including proven time in managerial roles.
• Significant hands-on expertise in Marketing Mix Modeling, including regression analysis, time series, Bayesian methods, and causal inference.
• Experience with open-source MMM frameworks (e.g., Lightweight MMM, Robyn, PyMC-based models).
• Exposure to agent-based media planning, causal ML.
• Experience leading teams or mentoring junior analysts.
• STEM (Science, Technology, Engineering, Mathematics) majors with quantitative emphasis – Statistics, Computer Science, Operations Research, Economics, Engineering etc.
• Industry or consulting experience, along with project management skills strongly preferred.

Technical Skills

• Proficient in Python and/or R, with solid understanding of advanced statistics.
• Strong hands-on experience in MMM development & deployment.
• Experience with Bayesian and classical econometric techniques (e.g., hierarchical models, regression, adstock, saturation, priors design).
• Familiarity with incrementality testing, experimental design, causal inference.
• Ability to build, validate, and maintain scalable MMM pipelines.
• Knowledge of cloud environments (AWS/GCP/Azure), SQL, and data engineering workflows.
• Experience integrating MMM outputs with business dashboards.

Business & Domain Skills

• Proven ability to translate data insights into commercial recommendations.
• Understanding of marketing channels, media planning, campaign measurement.
• Knowledge of pharma markets, HCP/DTP promotion strategy, and compliance.
• Ability to partner with marketing, finance, brand teams to influence decisions.
• Experience presenting to C-suite and senior leadership.

Responsibilities

• Lead development and enhancement of MMM models for multiple brands/markets.
• Design and maintain ROI optimization frameworks & budget allocation scenarios.
• Combine MMM with experimentation, digital attribution & forecasting.
• Own MMM roadmap, vendor management.
• Build insights playbooks and support annual brand planning & investment decisions.

NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS

• Up to 15% Work Location Assignment: Hybrid.

The closing deadline for applications is January 4th 2026. All applicants must have the relevant authorisation to live and work in the UK / EU as applicable.

Purpose

Breakthroughs that change patients' lives... At Pfizer we are a patient centric company, guided by our four values: courage, joy, equity and excellence. Our breakthrough culture lends itself to our dedication to transforming millions of lives.

Digital Transformation Strategy

One bold way we are achieving our purpose is through our company wide digital transformation strategy. We are leading the way in adopting new data, modelling and automated solutions to further digitize and accelerate drug discovery and development with the aim of enhancing health outcomes and the patient experience.

Flexibility

We aim to create a trusting, flexible workplace culture which encourages employees to achieve work life harmony, attracts talent and enables everyone to be their best working self. Let’s start the conversation!

Equal Employment Opportunity

We believe that a diverse and inclusive workforce is crucial to building a successful business. As an employer, Pfizer is committed to celebrating this, in all its forms – allowing for us to be as diverse as the patients and communities we serve. Together, we continue to build a culture that encourages, supports and empowers our employees.

DisAbility Confident

We are proud to be a Disability Confident Employer and we encourage you to put your best self forward with the knowledge and trust that we will make any reasonable adjustments necessary to support your application and future career. Our mission is unleashing the power of our people, especially those with unique superpowers. Your journey with Pfizer starts here!