Senior System Administrator

ABOUT THE ROLE Join a two-person IT operations team at a SaaS company, maintaining the systems and infrastructure that support day-to-day business operations. You will help ensure reliable, secure services across a heterogeneous environment. WHAT YOU'LL DO - Administer and maintain servers, networks, and storage across Windows and Linux environments. - Maintain core infrastructure, including Proxmox, Kubernetes, CEPH, and networking systems. - Install, configure, and support hardware and software. - Monitor system performance, availability, and security, and troubleshoot incidents. - Plan and deliver IT projects. - Support implementation of ISO 27001 and C5 compliance requirements. WHAT WE'RE LOOKING FOR - Completed vocational training or a degree in computer science, or a comparable qualification. - At least 3 years of experience in system administration or a related role managing servers, networks, and storage. - Production experience with virtualization, particularly Proxmox. - Experience administering Windows and Linux systems, with solid knowledge of server administration, networking, and IT security. - Experience with Microsoft 365 and cloud services such as Azure in hybrid environments. - German proficiency at C1 level and English proficiency at B2 level. - Experience with Kubernetes, CEPH, procurement, supplier management, or ISO 27001/C5 compliance is beneficial. COMPENSATION & BENEFITS Visa sponsorship is not available. Benefits include flexible working hours, home office options, professional development support, and health and mobility benefits. LOCATION On-site in Freiburg im Breisgau, Germany.