System Administrator for EDR/SIEM | Systemadministrator/in (m/w/d) für EDR/SIEM

Job Summary

The Kommunales Rechenzentrum Niederrhein (KRZN), one of Germany's largest municipal IT service providers, is seeking a System Administrator specializing in Endpoint Detection and Response (EDR) and Security Information and Event Management (SIEM). This full-time, initially 5-year fixed-term position involves the conception, development, and secure operation of central EDR and SIEM infrastructure, primarily based in Kamp-Lintfort with home office options. Day-to-day responsibilities include integrating log sources, building security monitoring use cases, managing alerting, and supporting incident response processes. The ideal candidate will have a degree in IT or a comparable vocational qualification (e.g., IT Specialist for System Integration) and professional experience in administering IT security systems. Key tasks also involve optimizing data pipelines, collaborating closely with network and information security teams, coordinating data source integration, and participating in budget planning and security audits (BSI IT-Grundschutz, ISO 27001). Strong German language skills (C1 level) and proficiency in MS Office are mandatory.