Data Engineer – Business Intelligence (BI) (f/m/d), Karlsruhe

Salary: 49.000 - 89.000 € per year

• Degree in Computer Science or a comparable qualification through practical experience.
• Hands-on experience in Data Engineering or BI, including end-to-end pipeline design, implementation, and operations.
• Strong curiosity and motivation to understand business domains and explore new technologies.
• Ownership mindset with a structured approach to root-cause analysis and sustainable problem-solving.
• Enjoy working across complex system landscapes and enabling others with reliable, high-quality data foundations.
• Professional proficiency in English and German.

• Onboard new data sources, design data models, and build scalable end-to-end pipelines for analysts and business teams.
• Translate business requirements into robust, reusable, and well-documented data models in close collaboration with stakeholders.
• Continuously evolve our data warehouse landscape using Dagster, dbt, Python, Trino, Impala, S3, GitLab, SQL databases, and Tableau.
• Operate and stabilize pipelines by investigating incidents, resolving data quality issues, and executing historical or long-running computations.
• Maintain and modernize our SQL Server environment, including code refactoring, performance tuning, capacity planning, backup strategies, and data center migrations.

• Cloud
• Data Warehouse
• GitLab
• Python
• SQL
• Tableau
• Web
• dbt
• Backbone
• Support
• Linux
• Slack
• Windows

More:

With our strong brands GMX, WEB.DE, and mail.com and over 42 million active users, we are the leading email and communications platform in Germany, Austria, and Switzerland. We develop services and apps that simplify users digital lives, from office tools and cloud solutions to personal ID management. We offer a lively corporate culture with flat hierarchies, a wide range of training opportunities, active healthcare initiatives, flexible working models, and various financial benefits, making it a great place to grow your career.

last updated 22 week of 2026