Data Engineer (m/w/d)

The Cornelsen Group, headquartered in Berlin, has been one of the leading providers in the German-speaking educational market with brands such as Cornelsen, Duden, Cornelsen Experimenta as well as Veritas and the Verlag an der Ruhr for more than 75 years. With over 1,600 employees, we develop innovative crossmediale educational solutions from early childhood to adult and professional life. Together we shape the formation of tomorrow and make a meaningful contribution in an environment with high social relevance.

With us you can move something and unfold your potential. Be part of our team!

For our AI Products & Services division, we are looking for a*n Data Engineer (m/w/d) in fulltime or parttime at the next possible time.

As a team member, you support us in developing innovative AI applications for use in schools and in the Cornelsen Group. Your focus is on the development and operation of our central data platform: This enables data management and provision across the entire lifecycle and provides data engineers with standardized services. Together with our Data Engineers team, you are responsible not only for the technical implementation, but also for the entire process – from conception to smooth operation of the services within the Data Platform. You follow the development of data technologies and good practices in the field of AI (e.g. vector databases, embedding models, RAG) and implement them together with the team.

You have at least 3 years of professional experience in this field. You bring a completed degree in business informatics, computer science, mathematics or a related area or a comparable qualification. You have extensive experience in designing and implementing data platforms, data APIs and data pipelines. You control the design and development of REST APIs for data provision, preferably with FastAPI. You can define data service building artifacts (with Docker and Gitlab CI). You can provide data services in production (with Kubernetes, Terraform and Ansible). You feel comfortable with our tech stack and have ideally already experience with great parts of it: Python (e.g. alembic, Dagster, DuckDB, FastAPI, pandas, Polars, SQLAlchemy), S3, PostgreSQL, Kubernetes, Redis, MongoDB. You have good knowledge of German and English.

Design the future of education in a meaningful environment Experience optimal work-life balance with 30 days vacation and flexible working hours Work flexibly mobile up to 4 days a week and enjoy up to 20 days of workation in Europe (EEA) per year Work agile in dynamic and cross-functional teams Strength your health and well-being with our work-life platform evermood Benefit from attractive benefits such as Kita and Hort grants, discounts on books, company pensions and asset-effective services Set sustainable mobility with service bike leasing and reduced Germany ticket – good for you and our environment Enjoy organic regional food in our in-house canteen at lunch with your colleagues Develop your potential through personal and professional development opportunities (further education, specialist conferences, e-learnings & networking) Experience strong team spirit at sports events, events and employees' festivals

Cornelsen is committed to equal opportunities, diversity and integration in the workplace. We prevent discrimination and harassment of any kind due to gender, skin color, religion, sexual orientation, origin, disability, sexual identity or other protected features.

You will find only washed Cornelsians on our career side! We are not yet as diverse as we would like, but D&I is a very big concern. JOBV1_EN