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osapiens

Senior System Administrator – Linux

osapiens

Senior System Administrator responsible for managing Linux servers and databases. Enabling sustainable growth through innovative technology and cross-team collaboration in a hybrid work environment.

Posted 6/2/2026full-timeMannheim • 🇩🇪 GermanySeniorWebsite

Tech Stack

Tools & technologies
AnsibleCassandraChefCloudDistributed SystemsElasticSearchFirewallsGrafanaLinuxNoSQLPrometheusPuppetSQL

About the role

Key responsibilities & impact
  • 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.

Requirements

What you’ll need
  • Passion for Linux, Automation & Databases: You’re enthusiastic about Linux, open-source technologies, distributed databases, and automation-driven infrastructure.
  • Strong Linux & DB Expertise: Extensive experience managing Linux (Ubuntu) systems as well as operating SQL/NoSQL databases in distributed environments. Experience with ScyllaDB, Cassandra, and/or Elasticsearch/OpenSearch is highly desirable.
  • Monitoring & Optimization Skills: Hands-on experience with monitoring and performance tooling such as Grafana, Prometheus, and Bash scripting. Ability to analyze database and system metrics to drive improvements.
  • Distributed Systems Know-How: Understanding of replication, sharding, consistency levels, failover strategies, and capacity planning for distributed data platforms.
  • Networking & Security Proficiency: Solid understanding of networking and security principles (firewalls, load balancing, TLS, performance tuning).
  • DevOps Knowledge: Familiarity with the DevOps lifecycle and IaC tools (Ansible, puppet, chef, etc.) is a plus—especially for automating database & deployment lifecycle tasks.

Benefits

Comp & perks
  • - A purpose-driven mission tackling complex sustainability challenges while working alongside global industry pioneers at a fast-growing unicorn company
  • - Room for creativity through collaborative teamwork and an open communication culture
  • - Flexibility and team bonding with our hybrid work options
  • - Fuel for your growth journey, both personally and professionally
  • - Sustainable mobility options, promoting eco-friendly commuting solutions
  • - Fun team events and outings with our global teams
  • - Inspiring workspaces in Mannheim and beyond

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
LinuxScyllaDBCassandraElasticsearchAnsibleBash scriptingSQLNoSQLMonitoringPerformance optimization
Soft Skills
CollaborationGuidanceProblem-solvingCommunicationTeamwork