Senior Linux System Engineer (m/f/x)

Department: osapiens Hub Location: Mannheim Description About osapiens At osapiens, more than 550 talented minds unite around one mission: enabling sustainable growth for businesses worldwide. Founded in 2018 and headquartered in Mannheim, Germany, we have built the AI-driven osapiens HUB - a multi-tenant platform hosting 26 enterprise-grade solutions designed for cross-company collaboration, automation, and compliance. With offices across Europe and the US, we are shaping the future of scalable and secure business technology. Your Team Our System Administration & Operations Team keeps the osapiens technology platform running smoothly, securely, and at scale. They manage and optimize Linux servers, ensure stability, automate operational workflows, design high-availability architectures, and push performance monitoring and troubleshooting to the next level. The team comes together in the office five days a week, enabling close collaboration, fast problem-solving, and strong knowledge sharing. Your Key Responsibilities - 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. Your Experience - 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. Join us for this and more... - 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