Senior System Administrator

Semalytix

Senior System Administrator ensuring reliability, security, and scalability of cloud infrastructure for Semalytix. Key role in maintaining Linux environments and optimizing CI/CD processes.

Posted 6/24/2026full-timeRemote • 🇩🇪 GermanySenior💰 €60,000 - €80,000 per yearWebsite

Tech Stack

Tools & technologies

AndroidAWSAzureCloudDockerElasticSearchGrafanaiOSKubernetesLinuxMacOSPrometheusPythonUnix

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

At least 5 years of experience administering Linux- or Unix-based production environments and infrastructure
Strong expertise in Linux system administration, networking fundamentals, virtualization, and container technologies (Docker and Kubernetes)
Experience with administrating and managing cloud environments (AWS, Azure)
Identity and access management experience (LDAP, SSO, IdP integrations)
Solid scripting skills (ideally Python and Bash) with experience maintaining and modernizing operational scripts
Strong understanding of infrastructure security, including Linux hardening and security best practices following frameworks such as ISO 27001, CIS Benchmarks, DISA STIGs, BSI IT-Grundschutz or similar
Experience implementing and maintaining monitoring, logging, and alerting systems for infrastructure observability, ideally with Elasticsearch, Prometheus and Grafana
Experience managing system lifecycle processes including patching, upgrades, and controlled infrastructure changes
Experience implementing or operating Mobile Device Management (MDM) solutions on macOS, iOS and Android, and supporting secure device rollouts
Experience with incident response, root cause analysis, and improving operational resilience
Experience with typical project management tools, ideally Atlassian
Fluent English (C1 or higher); German is a plus

Benefits

Comp & perks

Provision of MacBook and peripherals for remote work setup
Flexible working hours, with full-time or part-time options (30h–37.5h per week)
Six weeks of paid annual leave
A comprehensive educational package to support your professional development

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

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

Hard Skills & Tools

Linux system administrationUnix system administrationNetworking fundamentalsVirtualizationContainer technologiesDockerKubernetesScripting (Python)Scripting (Bash)Infrastructure security

Soft Skills

CollaborationProblem-solvingOperational resilienceIncident responseRoot cause analysis

Certifications

ISO 27001CIS BenchmarksDISA STIGsBSI IT-Grundschutz