1&1 Mail & Media Applications SE

Private Cloud Engineer (f/m/d)

at subsidary 1&1 Mail & Media Applications SE in Karlsruhe or Munich
Reference ID: 1477


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

Since 2017, we have been developing and operating our on-premise Kubernetes private cloud platform running on bare metal servers (> 80.000 CPU-Cores) in our data centers. Work with us on our highly available platform for our more than 42 million users (WEB.DE, GMX, mail.com) and help us improve our more than 300 cloud-native services! Our cloud platform is growing every day with features like persistent storage, GPUs and Service Mesh technology (Istio). Are you a passionate and experienced Cloud Engineer and want to shape the Future with us? Do you like to develop cutting-edge technologies and really want to make a difference in an agile company? Then we are looking for you! Come grow with us!

  • Enhance and optimize our infrastructure, together with your peers.
  • Develop and maintain our Kubernetes platform – to allow us to offer an outstanding service to our internal “customers”.
  • Define and automate build and deployment processes with continuous integration.
  • Contribute to our own ready-made Kubernetes operators.
  • Work on open-source projects and be part of our 24/7 on call rotation.

We Appreciate

Have you completed a technical degree or do you have comparable experience? Do you have experience with technologies like K8s, Python, Prometheus, Puppet, and GitlabCI in a scalable, high-traffic environment? Do you love automation and complex tech-stacks? Are you a software engineer with a passion for operations or an operations engineer with a sound development background? Then we are looking forward to your application!

  • Practical experience with Kubernetes, Docker, CI/CD, infrastructure-as-code, and corresponding tools.
  • Strong Linux affinity and good knowledge of BASH, Python and/or Go.
  • Accustomed to GIT-Workflows: feature branches, merge requests.
  • Eager to learn new technologies and believing in teamwork.
  • Fluent technical English, German optional but preferred.

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