Germany
ALTEN
Sanitätshaus Aktuell AG
Data Engineer (m/f/d)
Germany
Cologne, North Rhine-Westphalia, Germany
PythonSQLAWSDockerTerraform
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About the opportunity
This position is a good fit if... For you, data isn't just zeros and ones, but the foundation for good decisions? You find joy in creating clean data structures from chaotic legacy systems? You think in pipelines, not in scripts? Error handling and retry logic are self-evident to you, not optional? You want to learn from experienced engineers while implementing your own ideas? Then you're in the right place with us!
Responsibilities
As a Data Engineer, you will build the data pipelines that enable our digital transformation. You will be responsible for the clean, reliable, and scalable flow of data between hundreds of ERP systems and our modern data architecture.
- Data Pipeline Engineering: You will design and implement robust ETL/ELT pipelines that reliably extract, transform, and load data from several hundred ERP systems. You will use modern orchestration tools and ensure that everything runs smoothly, even with complex data flows. You will build pipelines that not only work but are also maintainable and scalable.
- Data Lake & Data Warehouse Architecture: You will build our Data Lake infrastructure on AWS from the ground up. You will structure data meaningfully, implement data governance concepts, and ensure that data is optimally prepared for analytics and business intelligence. You understand the difference between raw, staging, and curated data and implement corresponding architectures.
- Greenfield Project – Legacy System Integration: You will be right in the middle of an exciting greenfield project: the integration of several hundred legacy ERP systems. This is not a standard integration – it involves complex data structures, different formats, and the challenge of creating a consistent data model from heterogeneous sources.
- Workflow Orchestration & Reliability: You will implement resilient workflows for time-critical data processing. You will use modern orchestration patterns and ensure that pipelines continue to run or restart in a controlled manner, even in the event of errors. You will build monitoring and alerting so that problems are detected before they lead to real failures.
- Collaboration & Development: You will work closely with our Staff Engineer, the Product Owners, and the ~10-person dev team. You will learn from experienced colleagues while contributing your own ideas. You will grow with the challenges and continuously develop yourself.
- Data Quality & Documentation: You will implement data quality checks and ensure that bad data doesn't even enter our systems. You will document data flows and transformation logic so that others can understand what happens to the data.
The Profile
Must-haves
- At least 3 years of experience as a Data Engineer or in comparable roles
- Hands-on experience with ETL/ELT pipelines and data lakes
- Good Python skills for data processing and pipeline development
- Experience with cloud platforms, ideally AWS (S3, Glue, Athena, RDS, etc.)
- Basic knowledge of Infrastructure as Code (Terraform or CDK)
- Understanding of data modeling and solid SQL skills
- Experience with Git and CI/CD
Nice-to-haves
- Experience with Temporal or similar workflow orchestration frameworks (Airflow, Prefect, Dagster)
- Knowledge in integrating legacy ERP systems
- Experience with streaming technologies (Kafka, Kinesis)
- Container knowledge (Docker, ECS)
- Monitoring with Grafana
- Interest in healthcare or e-commerce
- AWS certifications
Why Us?
What we offer
- Hybrid model: 2 days per week in the office in Cologne, 3 days flexible work from wherever you want
- Greenfield project: You will build our modern data architecture from the ground up – no legacy code you have to understand first
- Real challenge: Integration of several hundred ERP systems – complex, but also extremely educational
- Modern tech stack: AWS, Python, Terraform, modern data engineering tools
- Mentoring & Growth: You will work with experienced engineers and develop yourself
- Room for initiative: You will contribute your ideas and help shape our data infrastructure
- Growing team: You will become part of a motivated ~10-person development team
- Impact: Your pipelines will ensure that people get access to important aids more easily
About us
For over 35 years, we have been a reliable and strong partner for our members across the entire spectrum of aids. We organize purchasing, sales, personnel development, and marketing for our over 480 members at more than 700 national locations.
To continuously improve for our members and optimize our service portfolio in times of digital change, we are looking for you in full-time employment starting as soon as possible at the Vettelschoß location.
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