Senior IT System Administrator in Dresden

• Operation, maintenance and further development of our on-prem infrastructure (Proxmox cluster with several nodes and VMs incl. backup strategies)
• Administration and expansion of our network infrastructure (OPNsense Firewall, UniFi Fabric, VLANs, VPN - OpenVPN/WireGuard/Headscale)
• Operation and further development of our security stack (SIEM/EDR with Wazuh, Endpoint Security, Incident Detection)
• Responsibility for monitoring & logging (Loki, Grafana, Zabbix incl. alerting)
• Incident response incl. root cause analysis and sustainable troubleshooting (post-mortems)
• Automation of infrastructure and processes with Ansible (Linux, Windows, macOS) and scripting (Python, Bash)
• Integration and use of APIs (Google, Microsoft Graph, Atlassian, GitLab)
• Further development and review of IT security guidelines (e.g. password, security and AI policies)
• Support of our DATEV environment incl. SmartCard integration
• Administration of users, access and authorizations (AD, Google Workspace, Microsoft 365)
• Administration of our VoIP solution (3CX)
• Lifecycle management for hardware and end devices (Windows, macOS, Linux)
• 1st & 2nd level support for our employees (troubleshooting, onboarding/offboarding)
• Planning and implementation of IT projects (migrations, rollouts, infrastructure expansion)
• Development and maintenance of documentation in a mature environment, From hardware-related firmware to the complete system: thanks to the close integration of hardware, software and in-house production, you can test and optimize your solutions directly in the real system.

Diversity & further development Varied projects in different industries allow you to continuously learn and develop your skills - both technologically and methodically.

Creative freedom & responsibility You take responsibility for your own modules or systems and actively help shape technical solutions and future fields of technology.

Stability & prospects Permanent employment with long-term prospects, a lot of personal responsibility and very good development opportunities.

Team & culture International, experienced team with flat hierarchies, short decision-making processes and a genuine interest in your ideas. We value pragmatic cooperation and technical quality.

• Several years of experience in the independent administration of complex IT infrastructures
• Very good knowledge of Linux (e.g. Debian, Ubuntu, Arch) including in-depth troubleshooting (kernel, drivers, network)
• Experience with Windows Server and macOS environments
• Sound knowledge of network technologies (VLANs, STP/RSTP, LACP, routing, firewalls, VPN)
• Experience in operating virtualization environments (Proxmox/KVM, cluster operation, backups)
• Hands-on experience with automation (Ansible) and scripting (Python/Bash)
• Knowledge of SIEM/EDR and IT security (e.g. Wazuh, Elastic, Splunk)
• Experience with Atlassian Stack, GitLab and Directory Services
• Structured, solution-oriented way of working and a high sense of responsibility
• Willingness to familiarize yourself deeply with existing systems and to improve things sustainably
• Very good knowledge of German and English

• Flexible working hours (flexitime with core working hours 10:00-15:00)
• 1 fixed home office day per week + additional mobile work by arrangement
• Modern, bright offices in a central location in Dresden

Benefits & additional services

• Choice of Germany ticket (€55.10 subsidy) or JobRad (€54.90 subsidy) after the probationary period
• Free gym in the building

Employee benefits Flexible working hours High-quality technical equipment home office option Soft drinks, coffee, water, tea, milk Fruit, vegetables, snacks employee discounts through corporate benefits Personal feedback and development conversations Diverse part-time options Bikeleasing Start-up spirit Shower facilities 30 days of annual leave Flexible working hours Fitness studio Daycare subsidy Job ticket daycare support free gym Free parking Offer sports courses on site Subsidies for public transportation Employee referral bonus

Note: Please only apply via our direct application link hosted by Empfehlungsbund and ITsax.de: https://www.itsax.de/jobs/299552/senior-it-system-administrator-m-slash-f-slash-d-in-dresden . We look forward to getting to know you! Shape the future of wireless communication with us. While our projects and teams have grown significantly, our internal IT still has considerable potential for expansion. This is exactly where you come in. We are looking for a highly experienced individual who not only operates our IT infrastructure, but also actively develops it, automates it and takes it to a new level., Based in Dresden, Germany - the heart of Silicon Saxony - we are a semiconductor startup for the breakthrough development of a new non-cellular 5G wireless chipset that enables secure massive IoT use cases. Driven by a vision of a future where technology is seamlessly integrated into our daily lives, encompassing homes, industries, public spaces and healthcare, we strive to optimize resource and energy consumption while establishing global digital sovereignty. To realize this vision, we are actively developing a low-cost and ultra-low-power 5G wireless chipset based on the revolutionary NR+ non cellular private 5G standard. We are a member of the community because we want to offer all talented specialists the opportunity to advance the Dresden location with their know-how, even if we are unable to offer a position ourselves. Ms. Jessica Hinkelmann