Network Administrator responsible for designing and implementing secure IT infrastructures. Collaborating closely with project management and clients at FlexIT Consulting GmbH in Düsseldorf.
Responsibilities
Planung, Design und Aufbau leistungsstarker Netzwerkumgebungen (Switching, Routing, LAN, WLAN, VPN) inkl. VLAN/ACL-Segmentierung, Quality-of-Service und Redundanzkonzepten.
Konzeption, Einrichtung und Betrieb moderner Next-Gen-Firewalls (z. B. Sophos XGS).
Umsetzung von Sicherheitsstandards wie Hardening, Zero Trust, Port Security, NAC und RBAC.
Administration heterogener Windows- und Linux-Serverlandschaften, Active Directory sowie Virtualisierung (VMware, Hyper-V, DataCore).
Planung, Ausleuchtung und Betrieb professioneller WLAN-Infrastrukturen (z. B. ARUBA Central).
Proaktives Monitoring sowie Analyse und Behebung komplexer Netzwerk- und Infrastrukturstörungen (2nd/3rd Level).
Erstellung sauberer System- und Projektdokumentationen sowie strukturierte Übergaben in den laufenden IT-Betrieb.
Enge Abstimmung mit Projektleitung und Vertrieb.
Requirements
Abgeschlossene technische Ausbildung (z. B. Fachinformatiker/in), IT-Studium oder eine vergleichbare Qualifikation
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