> Markdown version of [/jobs/ext/4713142-senior-it-systems-administrator](https://www.wearedevelopers.com/jobs/ext/4713142-senior-it-systems-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior IT Systems Administrator - **Company:** Wintermeyer Ventures - **Location:** Selm, Germany - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Amazon Web Services, Microsoft Azure, High-Level Architecture, Hyper-V, Linux Servers, Cloud Platform System, IT Architecture, Information Technology, Vmware - **Published:** November 14, 2026 - **Apply:** https://www.adzuna.de/details/5963088816 ## About the Role * At least 10 years of experience as a system administrator, IT infrastructure specialist, or in a similar role building and operating infrastructure. * Deep expertise in at least two of these areas: virtualization such as VMware or Hyper-V, Windows or Linux servers, SAN or NAS storage, and cloud platforms such as Azure, AWS, or GCP. * Strong understanding of IT architecture and infrastructure design, with demonstrated experience developing technical concepts, architecture designs, and high-level designs. * Experience operating and improving infrastructure environments, delivering projects, and resolving complex technical issues. * Clear communication and presentation skills, independent problem-solving, and a strong sense of ownership. * German and English proficiency at C1 level or higher, and current residence in Germany. ## Description Join the IT infrastructure team at a sustainability-focused company operating in the climate and resource transformation sector. You will help shape and advance complex IT environments through architecture, operations, and infrastructure projects. What You'll Do * Plan, design, and evolve complex IT infrastructures, including creating high-level designs and technical concepts. * Assess existing system landscapes and develop strategies to improve them. * Operate and advance server, storage, network, and cloud environments. * Coordinate and deliver infrastructure projects, working across operations, architecture, and management. * Handle senior-level troubleshooting and escalation management. * Document technical standards and establish infrastructure best practices.