1&1 Mail & Media Applications SE

(Senior) BI Developer (f/m/d) - onsite or remote / home office

at subsidary 1&1 Mail & Media Applications SE in Karlsruhe, Nationwide (Germany) or Munich
Full-time | Permanent | Professionals
Reference ID: 2791


About us

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. From this strong market position, services and apps are developed that simplify users' digital lives - from office tools and cloud solutions to personal ID management.

Your Tasks

Your goal is to enable data-driven work and you’re passionate about data warehouses? You really want to make a difference in a digital focused company with an agile environment? We have more than just a job waiting for you: the opportunity to use your skills and ideas to advance our data warehouse for the most successful freemail and cloud applications in Germany. Over 40 million customers use our e-mail and cloud tools on GMX and WEB.DE. Our mission is to help people manage their digital lives, deliver peace of mind and save time & money. Become part of our team to help develop our data warehouse further.

  • You grow a deep understanding of our products, monetization processes and the generated data.
  • You write concepts based on the requirements, that you define together with product management and sales.
  • You are in close contact with colleagues of the product development units so you can make sure that smart data is generated.
  • You build data models and ETL jobs.
  • You define KPIs and monitor their development, build reports and create ad hoc analyses.
  • You support product management in using self-service reporting tools, understanding the data and making the right decisions.

We Appreciate

You have several years experience as a business intelligence developer or in a comparable role in a DWH related team? Data thinking is your motivation and you can really inspire internal stakeholders? You are a strong team player and your working style is “hands-on”? Then we’re looking forward to your application!

  • You have significant experience with Microsoft SQL Server and SSIS or with equivalent data warehouse systems and ETL tools.
  • You have profound knowledge in Tableau or similar self-service tools.
  • You have a deep understanding of data warehouse design patterns.
  • You have strong skills in requirements engineering of data solutions and experience in KPI definition.
  • You have a solid background in programming languages.
  • You have strong verbal and written communication skills for working with technical and product roles.

apply online now

We value diversity and welcome all applications - regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.


1&1 Mail & Media Applications SE
Recruiting & Candidate Management

Brauerstraße 48
D-76135 Karlsruhe