Linux System Administrator

About the role

The Linux System Administrator is responsible for the administration, availability, security, performance, and operational support of enterprise Linux infrastructure. The role ensures Linux servers and associated services remain stable, secure, patched, monitored, backed up, and compliant with organizational standards.

Key responsibilities

• Install, configure, administer, and maintain Linux servers, primarily RHEL and other supported distributions.
• Perform day‑to‑day administration including user/group management, file systems, permissions, services, processes, packages and system configuration.
• Manage server provisioning, upgrades, migrations and de‑commissioning.
• Apply OS patches, remediate vulnerabilities, harden security and ensure CIS compliance.
• Monitor server health, performance metrics and troubleshoot incidents.
• Conduct root‑cause analysis for recurring issues and implement corrective actions.
• Handle storage configuration such as LVM, NFS, mount points and filesystem expansion.
• Support authentication technologies (LDAP, AD, Kerberos, SSH, sudo, PAM).
• Develop and maintain Bash/Shell scripts to automate operational tasks.
• Participate in on‑call rotation, incident, change and capacity‑management processes.

Required profile

• Diploma or degree in Computer Science, IT, Engineering or related field.
• Approximately 5+ years of hands‑on Linux system administration in a production environment.
• Relevant certifications such as RHCSA, RHCE or equivalent.

Required skills

• RHEL/Linux administration
• Bash/Shell scripting
• systemd, RPM/YUM/DNF
• LVM, NFS, SSH, sudo
• TCP/IP, DNS, LDAP/Kerberos
• Performance troubleshooting, patching, vulnerability remediation, security hardening
• VMware/Nutanix virtualization
• AWS or other cloud platforms
• Ansible or similar automation tools
• Monitoring platforms
• CyberArk, backup technologies, enterprise schedulers