1&1 Mail & Media Applications SE

System Administrator (f/m/d)

at subsidary 1&1 Mail & Media Applications SE in Karlsruhe or Munich
Reference ID: 1590


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

WEB.DE and GMX are among the leading e-mail providers in Germany. For the operation and further development of our portal and big data environments, we are looking for an experienced Linux Systemadministrator. Become part of a successful, international team of Systemadministrators and ensure the Linux server operation of our big data infrastructure for over 35 million customers.

  • You will be responsible for the administration and operation of our Linux servers.
  • You are the first point of contact for all technical questions regarding our big data infrastructure and form the interface to software development, project and product management.
  • You will monitor our systems, solve incidents independently and ensure 24/7 availability of our services and applications with occasional on-call duty.
  • You create concepts and action plans, accompany projects from conception to go-live and are also involved in architecture decisions.
  • You will automate our system landscape and familiarize yourself with new, complex technologies.

We Appreciate

You have a technical degree or are simply an enthusiastic Linux professional? You have several years of experience as a Linux Systemadministrator and are interested in operating a complex big data infrastructure? You are a real team player, your passion is Linux Systemadministration and your work attitude is "hands-on"? Then we are looking forward to your application!

  • You have very good Debian and RedHat based Linux distribution knowledge and also have experience with common TCP/IP network services and protocols.
  • You are familiar with the operation, setup and scaling of highly available web applications (e.g. Apache Webserver, Apache Tomcat) as well as automation (Puppet) and monitoring (Prometheus/Icinga).
  • You have experience with programming and scripting languages (e.g. Bash, Python, Ruby, Perl), have good knowledge of databases (e.g. Cassandra or Exasol) and ideally have already gained experience with one or more of the following technologies: CEPH, ElasticSearch, Kafka, Logstash, Redis or Zookeeper.
  • You enjoy creating concepts and are happy to take on projects where you can think outside the box.
  • You are solution-oriented, have strong communication skills in English and enjoy taking on responsibility.

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