IT Security System Administrator | Systemadministrator (w/m/d) IT-Sicherheit

Job Summary

The Ruhrbahn GmbH, a major public transport provider in the Ruhr area, is seeking an IT Security System Administrator to help shape the future of mobility and contribute to climate protection. This permanent role involves the critical administration, configuration, monitoring, and documentation of essential IT security infrastructure, including firewall, VPN, and IDR systems. Day-to-day duties include ensuring high system availability, supporting network administration, and providing expertise for IT security and network projects. The role requires a degree in Computer Science or equivalent technical qualification, coupled with several years of professional experience managing IT security systems. Candidates should possess strong technical understanding, proficiency in both Microsoft and Linux operating systems, and a self-reliant, goal-oriented work ethic. The position offers a stable, future-proof environment with flexible working hours and mobile work options, requiring participation in on-call duties.