Expert Data Scientist - Customer & Decision Intelligence (m/f/d)

MediaMarktSaturn; Ingolstadt; Hybrid; EUR 65.000 - 100.000; Vollzeit

Benefits dieser Stelle

Employees discount

Fitness collaborations

Training & Education

Mobile work (50/50)

Zusammenfassung

MediaMarktSaturn is seeking a scientifically grounded Data Scientist to shape the roadmap for Operations Intelligence and Customer Intelligence. You will build robust statistical and machine learning solutions across one of Europe’s largest omnichannel retailers.

You will collaborate with business stakeholders, product managers, data engineers, and analytics teams to translate challenges into scalable AI products deployed on Google Cloud Platform (GCP).

Qualifikationen

• Master's degree or PhD in a quantitative field such as Mathematics, Statistics, Physics, Computer Science, Data Science or Operations Research.
• Approximately 4–5 years of relevant professional experience after graduation in data science, statistical modeling, or ML.
• Strong foundation in probability, statistics, linear algebra, numerical methods, and optimization with ability to explain model assumptions.
• Proven ability to compare classical models and justify choices using scientific reasoning and evidence.
• Experience developing and validating predictive and optimization models; familiarity with operations and customer intelligence is a plus.

Aufgaben

• Deliver measurable commercial and operational impact through operations intelligence, customer intelligence, and personalization.
• Develop and validate models for demand forecasting, inventory optimization, assortment, pricing, and supply chain optimization.
• Translate business questions into mathematical problems and justify modeling approaches.
• Collaborate with Data Engineers and ML Engineers to build scalable data pipelines and production-ready ML solutions on Google Cloud Platform.
• Monitor model performance, validate assumptions, and ensure business value.

Kenntnisse

Python

SQL

NumPy/SciPy

scikit-learn

statistical modeling

probability theory

Ausbildung

MSc/PhD in Mathematics/Statistics/CS/Data Science

Tools

TensorFlow

PyTorch

XGBoost

LightGBM

BigQuery

Vertex AI

Jobbeschreibung

For us „Let’s Go!“ is not just a slogan, it is an attitude. We love technology and we want to excite. We have fun and want to inspire. Our customers and our teams. That’s why we are looking for people who share this spirit. People who are passionate about creating the shopping experience of the future together with 50.000 colleagues across Europe.

Your tasks

• Deliver measurable commercial and operational impact through operations intelligence, customer intelligence, and personalization.
• Contribute to the development of the Decision Science roadmap for operations intelligence and customer intelligence by applying scientifically sound statistical modeling, mathematical optimization, and machine learning.
• Translate business questions into well-defined mathematical and statistical problems, critically assess the available data, and select and justify the most appropriate modeling approach.
• Operations Intelligence: develop models for demand forecasting, inventory and replenishment optimization, assortment and allocation, supply chain and logistics optimization, workforce and store capacity planning, and pricing and markdown optimization.
• Customer Intelligence: develop recommendation systems and models for personalization, customer segmentation, customer lifetime value, churn, propensity, marketing effectiveness, and uplift.
• Choose methods based on assumptions, interpretability, robustness, computational efficiency, and empirical performance: use a simple linear model when sufficient, and advanced ML or AI only when it adds demonstrable value.
• Build predictive, prescriptive, and optimization models (e.g., linear/integer programming, simulation, causal inference, experimentation) to improve business performance and operational efficiency.
• Collaborate with Data Engineers and ML Engineers to build scalable data pipelines, feature stores, and production‑ready ML solutions using Google Cloud Platform (BigQuery, Vertex AI).
• Evaluate, monitor, and continuously improve model performance through baseline comparisons and the validation of assumptions, uncertainty estimates, and generalization, while ensuring business value.

Your profile

• Master’s degree (MSc) or PhD from an established, internationally recognized university in Mathematics, Statistics, Physics, Computer Science, Data Science, Operations Research, or a closely related quantitative field.
• Approximately 4–5 years of relevant professional experience after graduation in data science, statistical modeling, applied mathematics, or machine learning.
• A strong foundation in probability theory, statistical inference, linear algebra, numerical methods, and mathematical optimization, with the ability to explain the assumptions and limitations of different models.
• Proven ability to compare classical statistical models, optimization methods, and machine learning approaches and justify the choice using scientific reasoning and evidence.
• Practical experience in developing and validating predictive and optimization models; experience in operations intelligence (forecasting, inventory, supply chain, and pricing) or customer intelligence (recommendation systems, personalization, and CRM analytics) is an advantage.
• Experience in e‑commerce, marketplaces, digital products, media, retail technology, or customer‑facing systems is an advantage.
• Excellent programming skills in Python and SQL, with experience processing large‑scale structured and unstructured datasets.
• Experience with scientific Python libraries (e.g., NumPy, SciPy, statsmodels, and scikit‑learn) and ML frameworks such as XGBoost, LightGBM, TensorFlow, or PyTorch.
• Familiarity with Google Cloud Platform (GCP), including BigQuery, Vertex AI, and modern MLOps practices, is an advantage.
• Understanding of modern AI methods, including deep learning and Generative AI / LLMs, and the judgment to identify when these approaches are—or are not—appropriate.
• Strong analytical and problem‑solving skills with the ability to translate business needs into sound mathematical and statistical solutions.
• Excellent communication and stakeholder management skills, with the ability to explain complex concepts to both technical and business audiences.
• A collaborative mindset, scientific curiosity, intellectual independence, and a pragmatic approach to delivering measurable business impact.

What’s in it for you?

• International teams & exciting tasks
• 30 days vacation & company pension plan
• Employees discount & Fitness Collaborations
• Training & Education
• Open corporate culture & Teamwork
• Mobile work (50/50)

About Us

We are looking for a scientifically grounded Data Scientist to join our Decision Science team, which focuses on two pillars: Operations Intelligence and Customer Intelligence. You will develop robust statistical, mathematical, and machine learning solutions across one of Europe’s largest omnichannel retailers - from optimizing forecasting, inventory, supply chains, pricing, and store operations to improving customer experience, personalization, marketing, and digital commerce.

Our philosophy is to choose the right model for the problem - not the most fashionable technology. We value scientific rigor, meaningful baselines, transparent assumptions, and solutions that balance accuracy, interpretability, and complexity.

You will work closely with business stakeholders, product managers, data engineers, and analytics teams to translate business challenges into scalable AI products that are deployed on Google Cloud Platform (GCP).

Our best solutions arise when diverse perspectives come together. Diversity is key to achieving our vision of becoming the Experience Champion in Consumer Electronics. We value diversity, promote equal opportunities, and foster inclusion—join our team!

Your HR contact

Lea Ellerich

Let’s Go!