Required skills
- Network Administration
- Server Administration
- Switching
- VLAN
- Routing
- Firewall Management
- Network Segmentation
- OT Security
- Windows Server
- Virtualization
- Remote Maintenance
- IT Infrastructure
Nice to have:IEC 62443Attack Detection (OT)KRITISBSINIS2ISO 27001ProfinetModbus TCPOPC UAProxmoxAzureMicrosoft 365Entra IDPowerShellPythonProject Management (External Service Providers)
Languages: German
Job description
Seeking an IT/OT Infrastructure Specialist to support the secure operation and further development of OT networks and IT infrastructure. The role involves technical consulting, network segmentation, hardening, and project management.
Project overview
For our client, we are currently looking for an IT/OT Infrastructure Specialist to support the secure operation and further development of OT networks and IT infrastructure.
Responsibilities
The project is planned as full-time and will take place in the greater NRW area.
- Technical consulting for locations regarding network connection of systems, including network mapping, switching, cabling/fiber optics, security, and remote maintenance access
- Segmentation and hardening of OT networks, as well as setup and maintenance of the OT asset inventory and participation in OT security topics
- Operation, monitoring, and hardening of network, Windows Server, Proxmox, and backup, including evaluation of relevant CVE and security advisories
- Independent implementation of infrastructure projects as well as technical management and quality control of external IT/OT service providers
- Participation in IT/OT risk management according to NIS2 and in KRITIS (critical infrastructure) certifications as an interface between site technology, IT, and external partners
Requirements
- Several years of experience in the administration of network and server infrastructure, including switching, VLAN, routing, firewall rulesets, and segmentation
- Practical experience in the industrial or OT environment, e.g., system networks, PLC/control system connection, remote maintenance, or collaboration with system manufacturers and integrators
- Confident handling of Windows Server and virtualization
- Very good German and good English language skills
- Driving license class B and willingness to travel to locations
Nice to have
- OT security knowledge, IEC 62443, and experience with attack detection in the OT environment
- KRITIS, BSI, or NIS2 experience, as well as ISO 27001 fundamentals
- Knowledge of industrial protocols such as Profinet, Modbus TCP, or OPC UA
- Experience with Proxmox, Azure, Microsoft 365, Entra ID, as well as PowerShell or Python
- Experience from energy, chemical, utility, tank farm, or logistics sectors, as well as in managing external service providers
Project details
- Start: asap
- Duration: 3 Monate+
- Location: Großraum NRW, DE
- Languages: German
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