IT Administrator | IT Administrator (m/w/d)

appeleon gmbh

Sindelfingen, Baden-Württemberg, Deutschland
Published Nov 14, 2025
Full-time
Permanent

Job Summary

This role involves the installation, operation, and continuous improvement of IT infrastructure supporting an innovative agile product used by international clients. The IT Administrator will be responsible for installing and running Java applications for internal and customer projects, managing the internal client and server environments (both Windows and Linux), and ensuring network security through firewall administration and appropriate security measures. A key component of the role is providing helpdesk support and proactively enhancing existing system landscapes and IT infrastructure processes. Candidates should possess a background in IT System Integration or a relevant degree, coupled with practical experience in managing Java EE/Application Servers, various databases (DB2, Oracle, SAP Hana), and modern PaaS platforms (Microsoft, Amazon, IBM). The ideal candidate must also be proficient in Windows Server/Client administration, security protocols (SSL/TLS), and server virtualization technologies like VMWare and Docker. This is an attractive opportunity to join a dynamic, growing team in Karlsruhe and Sindelfingen, contributing to a clever product with significant future potential.

Required Skills

Education

Completed training as an IT Specialist for System Integration or relevant university degree

Experience

  • Professional experience in operating Java EE / Application Servers (JBoss, IBM Websphere, SAP Cloud Platform)
  • Professional experience with databases (DB2 / Oracle / SAP Hana)
  • Professional experience with PaaS offerings (Microsoft, SAP Cloud Platform, Amazon, IBM)
  • Professional experience with Windows Server and Clients (Windows 10) including Email Servers
  • Professional experience with current security technologies and methods
  • Professional experience with Server Virtualization (VMWare, Docker, Openstack)
  • Professional experience in software testing

Languages

German (Fluent)English (Fluent)

Additional

  • Permanent employment contract (unlimited duration). Required work location in Karlsruhe and Sindelfingen, Germany.