Your Tasks

• Support for the development and maintenance of data pipelines (ETL/ELT)
• Writing, optimization, and maintenance of SQL queries in BigQuery
• Assistance in building and managing datasets within Google BigQuery
• Execution of data validation, quality checks, and reconciliation processes
• Preparation and structuring of datasets for AI/ML use cases
• Collaboration with Data Engineers and Data Scientists in: Feature preparation, Data modeling and transformation
• Contribution to documentation and the establishment of data standards
• Support for ongoing data platform and migration initiatives

Your Profile

• Enrolled in a Master’s program (e.g., Computer Science, Data Engineering, Data Science, Information Systems)
• Strong SQL skills (joins, aggregations, window functions)
• Good knowledge of Python (data handling with pandas)
• Hands-on experience with Google BigQuery
• Querying large datasets
• Basic understanding of partitioning and performance optimization
• Understanding of data structures and data modeling basics
• Exposure to GCP (Google Cloud Platform) ecosystem
• Basic understanding of ETL/ELT pipelines
• Familiarity with tools like Airflow, dbt, or similar
• Initial experience with AI/ML workflows
• Data preparation, feature engineering
• Awareness of analytics or event-based data (e.g., tracking, CDP)
• Strong analytical and structured thinking
• Curiosity and willingness to learn
• Ability to work independently with guidance
• Fluent in English (German is a plus)

About Us

We are looking for you as a Working Student (m/f/d) in our Product delivery team to drive our strategic data projects forward with your innovative approach and fresh ideas. Our interdisciplinary team is characterized by agility, openness and respect. With us, you have the opportunity to contribute new impulses, actively shape processes and shape the retail media world of MediaMarktSaturn in a forward-looking way.

The best solutions come from bringing together diverse perspectives. Embracing diversity is key to achieving our vision of becoming the Experience Champion. We value inclusion, foster equal opportunity, and welcome you to be part of our team.