1&1 Mail & Media Applications SE

Cloud Engineer / Kubernetes, Docker (f/m/d)

at subsidary 1&1 Mail & Media Applications SE in Karlsruhe
Reference ID: 781


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

You are a passionate and experienced Cloud Engineer? Then our Automation Services Team is looking for you. Since 2017 we have been developing and operating our on-premise Kubernetes private cloud platform, running on bare metal servers (> 60.000 CPU cores) hosting highly available, critical services for more than 40 million mail users (WEB.DE, GMX, mail.com). Today our platform is a large business critical part of our infrastructure, including persistent storage, service mesh technology (Istio) and more.

  • Development and running of our own Kubernetes private cloud platform, using Python, Prometheus, Puppet, and GitlabCI in a highly scalable, high-traffic environment.
  • Orchestration and automation of build and deployment processes with continuous integration.
  • Developing our own, as well as customizing ready-made Kubernetes Operators.
  • Enhance and optimize our infrastructure, together with your peers in full production mode you will build and maintain scalable platforms, which will help our internal clients to get the most of our private cloud.
  • Work on open source projects and be part of our 24/7 on call rotation.

We Appreciate

Have you completed a technical degree or comparable experience? Are you interested in becoming part of our Automation Services Team, and are you really keen to automate everything, because you’re convinced of the advantages of automation? You are familiar with the distinction of private and public cloud? Your passion is your drive to continuously learn and understand a complex technology stack? You are a software developer with a love for operations or an operations engineer with a sound development background?

  • Strong Linux affinity and good knowledge in BASH, Python and/or Go.
  • Experience with Kubernetes and Docker, CI/CD, Infrastructure as code and related tools.
  • Accustomed to GIT workflows: feature branches, merge requests.
  • Team player by conviction and open to new technologies.
  • 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