Senior Linux System Administrator / DevOps Engineer (m/ž)

We are looking for a highly skilled Linux System Administrator with strong DevOps expertise to join our infrastructure team. This role involves building, securing, automating and scaling systems in high-availability environments. Responsibilities: - Manage, optimize, and secure Linux-based servers across on-premises and cloud environments - Perform system upgrades, patch management, performance tuning, and capacity planning - Design and implement infrastructure as code (IaC) with Terraform, Ansible, or similar tools - Build and maintain CI/CD pipelines for reliable software delivery - Automate provisioning, scaling, and disaster recovery - Maintain and manage development environments - Harden Linux systems using SELinux, AppArmor, namespaces, and cgroups - Implement identity and access management solutions - Monitor and mitigate security threats, vulnerabilities, and compliance risks - Deploy and maintain services and containers across internal and cloud environments - Ensure system availability, reliability - Continuously improve and enhance infrastructure

Requirements: - Deep understanding of Linux internals (kernel, networking, processes, filesystems, security) - Expertise in TCP/IP, routing, load balancing, iptables/nftables, VPNs, VLANs, and firewalls - Hands-on experience with Ansible and Terraform - Proficiency in scripting with Bash and Python (Ruby or Perl is a plus) - Strong knowledge of Docker/Podman, Kubernetes, Helm, and container runtimes - Experience with GitLab CI - Familiarity with LVM, RAID, NFS, CIFS - Understanding of MariDB/MySQL - Knowledge of vulnerability management practices - Strong communication skills, proactive mindset, and ability to work effectively in small teams - Ability to develop and maintain high-quality technical documentation