Linux System Administrator

Responsibilities

• Provision and maintain Linux servers and VMs using Foreman, libvirt, Puppet, Ansible, and Terraform/OpenTofu.
• Manage OS patching, upgrades, and content through Pulpcore.
• Maintain monitoring, metrics, and logging using Icinga, Prometheus, Grafana, and OpenSearch to ensure reliability and fast issue detection.
• Administer networking and security services, including HAProxy, BIND, FreeIPA, Keycloak, and Vault/OpenBao.
• Operate MySQL, PostgreSQL, and MongoDB databases, plus Apache and Nginx web services.
• Build and maintain CI/CD pipelines using Jenkins and GitLab, and automate operational tasks.
• Administer Kubernetes workloads, RBAC, networking, storage, and operators, including security and ISO 27001 compliance controls.
• Monitor and manage incoming tickets, diagnose and resolve technical issues, and support developer workflows.
• Participate in the on-call rotation, incident response, and root-cause analysis.

Qualifications

• 3–5 years of hands-on experience administering Linux in production, including RHEL/Rocky/AlmaLinux and/or Debian/Ubuntu.
• Strong CLI and Bash scripting skills, with solid systemd and networking fundamentals.
• 3+ years automating infrastructure with Puppet, plus hands-on experience with Ansible and Foreman.
• Experience with Terraform or OpenTofu, and libvirt/KVM for virtualization.
• Hands-on experience with CI/CD tools such as Jenkins or GitLab pipelines.
• Experience with cloud infrastructure and container orchestration using Kubernetes.
• Comfortable working in a security- and compliance-conscious environment oriented to ISO 27001.
• Certifications such as RHCE/RHCSA, CKA/CKAD/CKS, or HashiCorp Terraform/Vault are a plus.
• Good written and spoken English for documentation and team communication.

Recruitment Process

• Initial interview with the recruitment team.
• Technical interview with the team, including a live hands-on lab exercise lasting 30 minutes to 1.5 hours, depending on experience.
• Final decision and offer.