Senior Data Scientist with MMM @ Capgemini Polska Sp. z o.o.

Capgemini Polska Sp. z o.o.; Warszawa; On-site; PLN 295,000 - 381,000; Full time

Job summary

A leading global consulting firm in Warsaw is seeking a Senior Data Scientist specializing in Marketing Mix Models. The role involves designing and validating models to measure marketing ROI using data science techniques. Candidates should have over 5 years of experience in Data Science and proficiency in Python or R. This position offers a supportive work environment, opportunities for continuous learning, and a variety of benefits including private healthcare and training budgets.

Benefits

Private medical care

Access to training and certification

Life insurance

Sports card options

Qualifications

• 5+ years of experience in Data Science, Econometrics, or Advanced Analytics.
• Proven experience developing and maintaining Marketing Mix Models (MMM) at scale.
• Strong proficiency in Python and/or R for data manipulation, modelling, and visualization.
• Deep understanding of marketing metrics (ROI, CPx, media elasticity, saturation, adstock, etc.).
• Excellent communication and presentation skills in English.

Responsibilities

• Design, build, and validate Marketing Mix Models to quantify marketing impact and ROI across multiple touchpoints.
• Develop robust data pipelines for data ingestion, transformation, and validation across various sources.
• Apply econometric and machine-learning techniques to explain business outcomes.
• Collaborate cross-functionally with marketing, finance, and data engineering teams.
• Automate MMM workflows using Python, R, and cloud-based tools.
• Present insights to senior stakeholders in a clear, business-oriented manner.

Skills

Data Science

Python

R

Marketing Metrics

Statistical Modeling

Communication

Tools

Google

Meta

Salesforce

Adobe

Job description

Senior Data Scientist with MMM @ Capgemini Polska Sp. z o.o.

Location: Warsaw, Masovian Voivodeship, Poland

At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting‑edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Super‑powered by creativity and design. All underpinned by technology created with purpose.

Practical benefits

• Private medical care with Medicover with additional packages (e.g., dental, senior care, oncology) available on preferential terms, life insurance and 40+ options on our NAIS benefit platform, including Netflix, Spotify or Sports card.
• Access to over 70 training tracks with certification opportunities (e.g., GenAI, Excel, Business Analysis, Project Management) on the NEXT platform. Dive into a world of knowledge with free access to Education First languages platform, Pluralsight, TED Talks, Coursera and Udemy Business materials and trainings.
• Award‑Winning Stability & Culture: Become part of an organization celebrated as “Top Employer Poland 2024” – in the audit our stable and supportive work environment scored 100 %

GET TO KNOW US

Capgemini is committed to diversity and inclusion, ensuring fairness in all employment practices. We evaluate individuals based on qualifications and performance, not personal characteristics, striving to create a workplace where everyone can succeed and feel valued.

ABOUT CAPGEMINI

Capgemini is a global leader in partnering with companies to transform and manage their business by harnessing the power of technology. The Group is guided everyday by its purpose of unleashing human energy through technology for an inclusive and sustainable future. It is a responsible and diverse organization of over 360,000 team members globally in more than 50 countries. With its strong 55‑year heritage and deep industry expertise, Capgemini is trusted by its clients to address the entire breadth of their business needs, from strategy and design to operations, fueled by the fast evolving and innovative world of cloud, data, AI, connectivity, software, digital engineering and platforms.

YOUR PROFILE

• 5+ years of experience in Data Science, Econometrics, or Advanced Analytics.
• Proven experience developing and maintaining Marketing Mix Models (MMM) at scale.
• Strong proficiency in Python and/or R for data manipulation, modelling, and visualization.
• Deep understanding of marketing metrics (ROI, CPx, media elasticity, saturation, adstock, etc.).
>Experience working with marketing and sales data from sources such as Google, Meta, Salesforce, or Adobe.
• Solid grasp of statistical modelling, Bayesian inference, and regression analysis.
• Excellent communication and presentation skills in English.

Nice‑to‑have

• Experience with Google Meridian, Robyn, or other MMM frameworks.
• Knowledge of incrementality testing or attribution modelling.
• Background in FMCG, retail, or media analytics.
• Front‑end programming skills (e.g., Streamlit, React, RShiny, etc.).

Responsibilities

• Design, build, and validate Marketing Mix Models to quantify marketing impact and ROI across multiple touchpoints.
• Develop robust data pipelines for data ingestion, transformation, and validation across various sources (digital, CRM, media spend, and sales).
• Apply econometric and machine‑learning techniques (e.g., regression, Bayesian modelling, time‑series analysis) to explain business outcomes.
• Collaborate cross‑functionally with marketing, finance, and data engineering teams to align on KPIs and measurement frameworks.
• Automate MMM workflows using Python, R, and cloud‑based tools (AWS, GCP, Azure).
• Present insights to senior stakeholders in a clear, business‑oriented manner.
• Support model governance, documentation, and continuous improvement of MMM frameworks.

Key Requirements

• Data science, Python, R, Meta, Salesforce, Adobe, testing, React.
• Training budget, sport subscription, private healthcare, international projects, free coffee, bike parking, free parking, mobile phone, in‑house trainings, modern office, no dress code.