(Senior) System Administrator | (Senior) System Administrator (d/w/m)

Inxmail GmbH

Freiburg im Breisgau, Baden-Württemberg, Deutschland
Published Apr 7, 2026
Full-time
Permanent

Job Summary

As a (Senior) System Administrator at Inxmail, you will play a critical role in ensuring the stability, security, and evolution of a diverse IT infrastructure. Your daily responsibilities include managing servers, networks, and storage solutions across both Windows and Linux environments. You will be hands-on with core infrastructure technologies such as Proxmox, Kubernetes, and CEPH, while also overseeing hardware installation and system performance monitoring. Beyond maintenance, you will lead IT project planning and ensure strict compliance with ISO 27001/C5 standards. This position is ideal for a proactive professional who enjoys troubleshooting complex issues and working with hybrid cloud setups. Inxmail offers an attractive environment with flexible working hours, home office options, and a dedicated training budget, all while supporting high-profile clients like Audi and Vorwerk.

Required Skills

Education

Degree or vocational training in Computer Science or a comparable qualification.

Experience

  • Several years of professional experience in system administration or a comparable role
  • Extensive experience in server administration and network technology
  • Proven experience with virtualization technologies, specifically Proxmox
  • Professional experience managing hybrid setups with Microsoft 365 and Azure
  • Experience in IT project planning and implementation
  • Experience in implementing IT compliance requirements

Languages

German (Fluent)English (Fluent)

Additional

  • The role requires the ability to work in a hybrid setup and manage compliance standards such as ISO 27001 and C5.