Senior IT System Administrator (m/w/d)

# Senior IT System Administrator (m/w/d) **Location:** Dresden, Germany — Hybrid (mainly on-site, 1 fixed home-office day/week, more by agreement) **Salary:** €65,000 – €95,000 gross p.a. · Permanent · Full-time (part-time from 30h possible) **Languages:** German B2, English C1 ## About the company A growing Dresden-based deep-tech company (~60 employees) working across IoT, embedded systems and connected hardware. R&D-driven, flat hierarchies, strong ownership culture and direct influence on technology choices. ## Your role Own and modernise the internal IT infrastructure as it scales. You'll run it end-to-end alongside one IT colleague, reporting to the Director Operations. - Operate, maintain and expand the on-prem Proxmox/KVM cluster, including backup strategies - Administer the network: OPNsense, UniFi, VLANs, VPNs (OpenVPN / WireGuard / Headscale) - Own the security stack (SIEM/EDR with Wazuh), endpoint protection and incident detection - Run monitoring & logging (Loki, Grafana, Zabbix) and lead incident response / post-mortems - Automate infrastructure with Ansible; script in Python & Bash; integrate APIs (Google, MS Graph, Atlassian, GitLab) - Manage directory services & access (AD, Google Workspace, M365) and VoIP (3CX) - Provide 1st/2nd-level support, manage hardware lifecycle and lead migration / roll-out projects ## Must-haves - 6+ years' autonomous administration of complex IT infrastructures - Strong Linux expertise (Debian/Ubuntu/Arch) incl. deep kernel/network troubleshooting - Solid networking (VLANs, STP/RSTP, LACP, routing, firewalls, VPN) - Proxmox/KVM virtualisation incl. clustering & backups - Automation with Ansible; scripting in Python & Bash - SIEM/EDR & IT security (e.g. Wazuh, Elastic, Splunk) ## Nice-to-have - Windows Server & macOS administration - Atlassian Stack, GitLab, directory services experience ## What's on offer - Permanent contract, long-term perspective in a growing deep-tech environment - 30 days' holiday, flexitime, 1 fixed home-office day + further mobile work by agreement - Employer-subsidised pension & disability insurance (€100–200/month) - Deutschlandticket (€55.10) or JobRad (€54.90) subsidy after probation - Free on-site fitness studio · modern central Dresden office ## Process HR interview → technical interview with the department → offer.