Senior Linux System Administrator, Engineer

GameDuell GmbH

full-time

Posted on: 10/18/2025

Location Type: Hybrid

Location: Berlin • 🇩🇪 Germany

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Senior

AnsibleApacheAWSCloudDNSDockerGoogle Cloud PlatformHAProxyJamfKubernetesLinuxMacOSMySQLNGINXPostgresPythonRDBMS

About the role

Optimization, expansion, monitoring, updating and maintenance of our internal IT systems and services, including server and cloud infrastructure
Planning and implementation of service setups using Ansible
Point of contact for provisioning, installation and troubleshooting of server and cloud services as well as other internal services for all teams (mail server, file server, Kubernetes, telephone system, JIRA, Confluence, OTRS, etc.)
Development of scripts (Python, Bash) to optimize, automate and extend services, applications and processes
Administration of desktop operating systems (Linux, Windows and macOS) and application installations via software deployment systems (Jamf, ninjaOne), as well as providing 1st-, 2nd- and 3rd-level helpdesk support for our team members
Analyzing and addressing security risks (IT security)

Completed degree in IT or computer science, or equivalent vocational training (e.g., Fachinformatiker Systemintegration)
More than five years of professional experience as a System Administrator with Linux operating systems (preferably Red Hat/CentOS/Rocky and Debian/Ubuntu)
Extensive knowledge in automation and orchestration using configuration management tools (preferably Ansible) and experience with monitoring tools (Checkmk, Nagios/Icinga, ELK Stack, etc.)
Solid scripting experience with Python and Bash
Experience operating 24/7 production environments and in developing and implementing strategies for highly available internal services
Fluent German skills and good command of the English language
Strong understanding of virtualization technologies (e.g., XEN, KVM, Hyper-V) and containers (Docker, Kubernetes or similar)
Familiarity with cloud technologies (such as AWS, GCP, etc.)
Experience with directory services (Entra, AD/LDAP) as well as RDBMS (PostgreSQL and/or MySQL) and web/proxy servers (Apache, nginx or HAProxy)
Confident handling of networking technologies (DHCP, DNS, IPsec etc.) and configuration of network hardware (VLAN, routing etc.)
Experience with software deployment systems such as Jamf or ninjaOne

Benefits

A long-term position and an attractive working atmosphere in our office located in the heart of Berlin
A versatile, friendly and international team that ensures an enjoyable working environment
Independent work and challenging responsibilities
Interesting opportunities for professional and personal development
Meet-ups, networking events, language courses, sports activities (such as beach volleyball, yoga classes, table tennis, running and climbing groups, etc.)
Regular team events (e.g., Halloween party, BBQ events, Family & Friends party, cultural dinners, game nights, tournaments and more)
Flexible working hours and the option for hybrid working

Tip: use these terms in your resume and cover letter to boost ATS matches.

LinuxWindowsmacOSPythonBashAnsibleDockerKubernetesPostgreSQLMySQL

communicationtroubleshootingproblem-solvingteam collaborationanalytical thinking

degree in ITdegree in computer scienceFachinformatiker Systemintegration