System Administrator

• Kundenunterstützung: Du bist der fachliche Ankerpunkt für unsere Kund:innen: Von der proaktiven Beratung über den Second-Level-Support bis hin zur Konzeption und Umsetzung komplexer Infrastruktur-Setups
• Systemadministration: Mit KI-Konzepten und automatisierten Workflows hebst du unsere Prozesse auf das nächste Level. Du sorgst für eine saubere, wartbare Überführung in den Betrieb, hältst die Servicequalität hoch und nimmst dein Team durch aktiven Know-how-Transfer mit
• Kundencluster-Verwaltung: Du betreust unsere Kundencluster auf Ubuntu-Basis in einer virtuellen LXD-Umgebung und stellst sicher, dass sie reibungslos funktionieren
• Monitoring und Optimierung: Du entwickelst unser Monitoring-System weiter und optimierst es, um sicherzustellen, dass unsere Systeme und Dienste zuverlässig und effizient laufen
• Service-Projekte & Schnittstellen: Du leitest eigene Projekte und feilst an unseren internen Werkzeugen. Als verlässlicher Anker vertrittst du zudem proaktiv die Interessen deines Teams bereichsübergreifend

Linux Administrator – Schwerpunkt Shopware

• Resolve day-to-day IT support tickets independently, keeping response quality high and at least 90% of tickets within SLA.
• Own the full Berlin onboarding and offboarding journey, making sure every new joiner has hardware and account access ready on day one.
• Keep our hardware inventory accurate and up to date, and build simple processes that make asset tracking easier going forward.
• Grow our self-service knowledge base with clear, practical guides that help people solve common issues themselves.
• Plan ahead on IT procurement together with the wider IT team, so new hires and existing employees never wait on missing equipment.
• Keep the Berlin office in the loop with a regular update on IT changes, known issues, and best practices.
• Contribute to strategic Corporate IT initiatives, such as a device lifecycle policy, a VPN rollout, or software standardisation.
• Partner with People & IT to build a simple way to collect feedback on support and onboarding, piloting it within nine months and making it part of how we work by month twelve.

System Administrator – d/f/m

• You plan, implement and maintain the IT infrastructure for aconnic and NewTal, ensuring system availability and performance
• You manage Microsoft and Linux servers as well as virtualization environments using VMware, Hyper-V and Proxmox, ensuring a stable and high-performing IT landscape
• You maintain our network infrastructure with Fortinet firewalls and HPE switches, configure routing and VLANs, and optimize security and performance
• You administer Active Directory, DNS, DHCP and other domain services and ensure their seamless integration
• You plan and apply updates and patches to ensure the stability, security and currency of our IT systems
• You design and administer our Microsoft 365 environment, including Entra, Intune, SharePoint, Teams and Exchange Online
• You manage Microsoft Terminal Servers, Remote Desktop services and our backup infrastructure based on Veeam Backup & Replication
• You support users at 1st- and 2nd-level, resolve complex IT issues and coordinate server and network projects together with internal and external partners

IT System Administrator – m/f/d

• Customer support as the primary point of contact via phone, email and remote access.
• Independently receive, process and document service requests and incidents.
• Provide technical support and system monitoring in the areas of virtualization, Windows and Linux server services.
• Administer server hardware, storage systems, operating systems and networks.
• Proactively monitor customer systems and perform regular health checks.
• Identify root causes of problems and derive improvement measures.
• Plan, execute and control managed services within agreed SLAs.
• Participate in change management and consistently document all activities.
• Prepare service reports and support Continual Service Improvement (CSI).
• Work closely with customers and internal teams to ensure stable, secure and high-quality service delivery.

IT System Administrator

• Customer support: Primary point of contact for customers via phone, email and remote access.
• Independent handling, processing and documentation of service requests and incidents.
• Technical support and system monitoring: Analyze, prioritize and implement sustainable resolutions for incidents in the areas of virtualization, Windows and Linux server services.
• Administration of server hardware, storage systems, operating systems and networks.
• Proactive monitoring of customer systems and performing regular health checks.
• Identify root causes of issues and derive improvement measures.
• Managed services: Plan, execute and oversee managed services within agreed SLAs.
• Participate in change management and consistently document all processes.
• Prepare service reports and support Continual Service Improvement (CSI).
• Close collaboration with customers and internal teams to ensure stable, secure and high-quality service delivery.

IT Systems Administrator – m/f/d

• You plan, implement, and maintain the IT infrastructure for aconnic and NewTal, ensuring system availability and performance
• You manage Microsoft and Linux servers as well as virtualization platforms such as VMware, Hyper-V, and Proxmox, ensuring a stable and high-performing IT environment
• You maintain our network infrastructure with Fortinet firewalls and HPE switches, configure routing and VLANs, and optimize security and performance
• You administer Active Directory, DNS, DHCP and other domain services, ensuring smooth integration
• You plan and perform updates and patches, ensuring stability, security, and currency of our IT systems
• You develop and manage our Microsoft 365 environment, including Entra, Intune, SharePoint, Teams, and Exchange Online
• You manage Microsoft Terminal Servers, Remote Desktop Services and our backup infrastructure based on Veeam Backup & Replication
• You support users at 1st and 2nd level support, resolve complex IT issues, and coordinate server and network projects together with internal and external partners

• Ensure the reliability, security, and scalability of cloud-based infrastructure
• Maintain and evolve Linux-based environments ensuring resilience and security
• Identify opportunities to automate repetitive tasks and improve system observability
• Strengthen containerized infrastructure and optimize CI/CD processes
• Collaborate with engineering, product, and data teams for infrastructure support
• Champion infrastructure best practices including system hardening and disaster recovery
• Provide Tier 2/3 operational support for infrastructure incidents
• Design, implement, and maintain Mobile Device Management system

Senior System Administrator

• Kundenbetreuung: Zentrale Anlaufstelle für Kunden über Telefon, E-Mail und Remote-Zugriff.
• Eigenverantwortliche Annahme, Bearbeitung und Dokumentation von Service Requests und Störungen.
• Technischer Support und Systemüberwachung: Analyse, Priorisierung und nachhaltige Behebung von Incidents im Bereich Virtualisierung, Windows- und Linux-Serverdienste.
• Administration von Server-Hardware, Storage-Systemen, Betriebssystemen und Netzwerken.
• Proaktive Überwachung der Kundensysteme sowie regelmäßige Health-Checks.
• Identifizierung von Problemursachen und Ableitung von Verbesserungsmaßnahmen.
• Managed Services: Planung, Durchführung und Kontrolle von Managed-Services im Rahmen vereinbarter SLAs.
• Mitwirkung im Change Management sowie konsequente Dokumentation aller Vorgänge.
• Erstellung von Service-Reports und Unterstützung im Continual Service Improvement (CSI).
• Enge Zusammenarbeit mit Kunden und internen Teams zur Sicherstellung einer stabilen, sicheren und qualitativ hochwertigen Serviceerbringung.

IT System Administrator – m/w/d

• Customer support: Primary point of contact for customers via phone, email and remote access.
• Independent acceptance, processing and documentation of service requests and incidents.
• Technical support and system monitoring: Analyze, prioritize and permanently resolve incidents in the areas of virtualization, Windows and Linux server services.
• Administration of server hardware, storage systems, operating systems and networks.
• Proactive monitoring of customer systems as well as regular health checks.
• Identification of root causes and derivation of improvement measures.
• Planning, execution and control of managed services within agreed SLAs.
• Participation in change management and consistent documentation of all processes.
• Preparation of service reports and support for Continual Service Improvement (CSI).
• Close collaboration with customers and internal teams to ensure stable, secure and high-quality service delivery.

• Manage Infrastructure & Databases: Manage and optimize Linux servers in public cloud environments while operating and improving distributed database systems (e.g., ScyllaDB, Cassandra, Elasticsearch/OpenSearch). Ensure high availability, reliability, and performance across both compute and data layers.
• Proactive Monitoring & Performance Optimization: Continuously monitor system and database performance, identify bottlenecks, and implement tuning measures across distributed data clusters and Linux environments.
• Troubleshoot Distributed Systems: Diagnose and resolve complex issues within distributed databases, Linux servers, and cloud infrastructure—ensuring stable, scalable, and resilient operations.
• Automate with IaC: Increase efficiency through Infrastructure-as-Code (IaC) using tools like Ansible, automating database operations, cluster provisioning, and configuration management.
• Collaborate Across Teams: Work closely with cross-functional teams to optimize, scale, and evolve infrastructure and database systems for internal services and customer-facing platforms.
• Guide & Support: Provide expert guidance to colleagues and customers on database best practices, system performance, and scalable architecture patterns—ensuring smooth cloud and data operations internationally.

System Administrator jobs in Germany

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Linux Administrator – Schwerpunkt Shopware

System Administrator – d/f/m

IT System Administrator – m/f/d

IT System Administrator

IT Systems Administrator – m/f/d

IT System Administrator

Senior System Administrator

IT System Administrator – m/w/d

IT System Administrator

Senior System Administrator – Linux