Security, Network, and IT Administrator

Stellenbeschreibung:

Key Skills

Hyper‑V expert (alternative: VMware ESXi)
Scripting and coding experience for Hyper‑V automation
Advanced security knowledge, especially regarding system hardening
Experience with network devices (switches, routers, firewalls)
Basic knowledge of database handling would be a plus
Advanced Python skills for security testing automation would be a plus
Structured and conscientious way of working is mandatory

How You'll Make an Impact

Administration and maintenance of a virtualized test environment (Hyper‑V) serving as the technical foundation for critical infrastructure projects in energy systems (HVDC, FACTS), including:

Install, configure, and maintain virtual machines, operating systems, and applications within the test environment
Install and configure physical and virtual network devices, including switches, routers, and firewalls
Monitor system and network performance to identify and predict problems and make proactive adjustments
Manage the full lifecycle of virtualization and network components in alignment with cybersecurity guidelines and mandatory patching activities
Maintain and manage backup and recovery processes for the test environment
Troubleshoot and resolve issues across the Hyper‑V environment and connected network infrastructure
Administer and maintain security applications within the test environment, including endpoint protection, vulnerability scanning tools and access control systems
Provide technical support and create documentation for Hyper‑V processes, network configurations and security procedures
Track technical developments and technological trends in IT and OT security; continuously expand know‑how relevant to energy system test environments
Create and maintain disaster recovery plans and procedures for responding to major outages affecting the test infrastructure
Identify, assess and remediate security issues as they arise; implement and refine system hardening measures across the environment

What You Bring

MSc degree in computer science or electrical engineering, ideally with a focus on IT, security, automation or software development - or comparable education and professional training with additional qualifications
Proven hands‑on experience in IT or system administration (Windows mandatory; Linux experience a strong plus; macOS is a plus)
Strong knowledge of virtualization technologies, with focus on Hyper‑V and/or VMware ESXi
Solid experience with physical and virtual network infrastructure - configuration and administration of switches, routers and firewalls
Experience with containerisation technologies (e.g. Docker, Kubernetes)
Scripting experience with common languages such as Bash and Python; experience with PowerShell for Windows/Hyper‑V automation is a play
Ability to work in a self‑guided and result‑oriented way, with a clear drive to become a recognised technical expert in your area
Proficient in spoken and written English; German is a plus