System Administrator; Windows); f​/m​/d

About The Job

To strengthen our IT team, we are looking for a Senior System Administrator (Windows) (f/m/d) to not only operate but actively develop and future‑proof our internal IT landscape.

In this role, you are taking on a key responsibility for the architecture, stability, and scalability of our systems. You are proactively contributing to strategic initiatives, optimizing existing structures, and driving automation and modernization across our IT infrastructure.

• The opportunity to work in an innovative, fast‑growing international technology company
• Room for ownership and the ability to actively contribute to our organisational development
• Flat hierarchies, short decision‑making processes, and a dynamic work environment
• Flexible working hours with core working hours and a healthy work‑life balance
• A motivated, creative team and a company culture built on openness and progress

• Taking full ownership of administering, evolving, and scaling our internal system landscape (Windows clients, servers, and cloud environments)
• Designing, implementing, and optimizing IT infrastructures with a focus on stability, security, and performance
• Developing and automating processes using Power Shell and other technologies
• Evaluating, introducing, and standardising new tools, systems, and technologies
• Analyzing complex system environments and identifying and resolving root causes of issues
• Ensuring stable and secure operations through monitoring, performance optimisation, and proactive measures
• Advancing and integrating network infrastructures (LAN/Wi‑Fi, DHCP, DNS, IP management) into the overall architecture
• Documenting system architectures, processes, and best practices to ensure transparency and maintainability
• Acting as a technical point of contact for complex topics and supporting the team on advanced issues

• Degree in IT, completed vocational training (e.g., IT specialist), or a comparable qualification
• Several years of professional experience in Windows system administration within complex environments
• Strong expertise in designing, managing, and optimising Active Directory and Group Policies (GPOs)
• Solid experience in automation with Power Shell and ideally another programming language
• Deep understanding of network architectures and protocols (LAN/Wi‑Fi, DHCP, DNS)
• Experience in performance optimisation and troubleshooting of complex systems
• Structured, independent, and solution‑oriented working style with a high level of ownership
• Fluent German and good English skills

• Experience with VR/AR hardware or specialised technical setups
• Knowledge of IT security, system hardening, and best practices
• Experience with software and hardware lifecycle management