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# DE4_Administrator IT (80062821)

- **Company:** ArcelorMittal
- **Location:** Duisburg, Germany
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Wireless LAN, Amazon Web Services, Data Analysis, Microsoft Azure, Cloud Engineering, Linux, Routing, Network Administration, Open Shortest Path First (OSPF), Wireless Networks, Computer Network Technologies, Office365, Firewalls (Computer Science), Information Technology, Fortinet, Oracle Cloud Infrastructure, Big Ip, Cisco, Server Operating Systems & Platforms
- **Published:** August 17, 2026
- **Apply:** https://www.efinancialcareers.com/jobs-Germany-Duisburg-DE4Administrator_IT_80062821.id24430650

## About the Role

Job Description Main tasks The IT Infrastructure Expert will be in charge of: Maintaining and supporting Client & Server environments Supporting End users and technical teams in incident analysis and resolution Maintaining the Network based on Cisco & Siemens devices Maintaining Security devices based on Fortinet Analysing and resolving of virtual and physical network related incidents Providing support and guidance for OT teams in network management Supporting the hardening of IT and OT devices by enforcing policies and monitoring access to them. Participating in planning and execution of IT-related projects Providing a 24/7 support (on call duty) Specific Knowledge 3+ years experience in IT-Infrastructure Ability to work in Industrial Environment Strong knowledge in client and server OS (Windows necessary, Linux is an advantage) Good knowledge in O365 challenge (Skype/Teams especially) and cloud proxy technology Strong knowledge in Network technology: LAN/Routing on Cisco
(certification is an advantage) and optionally Siemens network devices Good knowledge in WLAN technology: Cisco Wireless Controller Basic knowledge about Firewall/IPS management (Cisco and Fortigate) Basic knowledge on Routing protocols: static, OSPF and WAN routing Basic knowledge of F5 products especially the F5 Big IP APM Basic knowledge of Cloud Design and Architecture (Azure, AWS, OCI,..) Knowledge on optical fiber connection analysis and splicing is an advantage. Knowledge on Alcatel Lucent telephone systems and FTA infrastructure is an advantage. Effective communication skill with non-IT users Languages: German (mother tongue), Fluent English is required Any other language will be considered as a plus.



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