Linux System Administrator

Unison Consulting Pte Ltd; Kuala Lumpur; On-site; MYR 60,000 - 80,000; Full time

Job summary

A technology consulting firm in Kuala Lumpur is seeking a skilled Linux System Administrator to manage RHEL and Ubuntu environments. The role involves system installation, performance tuning, and ensuring security across development and production infrastructures. The ideal candidate should have experience with shell scripting, user management, and cloud services support.

Qualifications

• Experience managing RHEL and Ubuntu server environments.
• Strong skills in system installation and configuration.
• Knowledge of security hardening techniques.

Responsibilities

• Install and configure RHEL and Ubuntu servers.
• Manage user accounts, groups, and permissions.
• Automate administrative tasks using scripting.
• Support virtualization and cloud environments.

Skills

Linux System Administration

Shell/Bash scripting

Performance tuning

System Security

Tools

Nagios

Zabbix

Grafana

RHEL

Ubuntu

MySQL

PostgreSQL

VMware

AWS

Azure

Job description

We are looking for a skilled Linux System Administrator to manage and support enterprise-level Red Hat and Ubuntu environments. The ideal candidate will be responsible for system installation, configuration, troubleshooting, performance tuning, and ensuring system security and uptime across production and development infrastructure.

⚙️ Key Responsibilities

• Install, configure, and maintain RHEL and Ubuntu servers (physical and virtual).
• Perform system updates, patch management, and performance optimization.
• Manage user accounts, groups, and permissions following IT security policies.
• Configure and support web servers (Apache, Nginx), database servers (MySQL, PostgreSQL), and file servers (NFS, Samba).
• Implement LVM, RAID, and disk management for storage solutions.
• Manage and monitor network configurations (DNS, DHCP, firewall, IP tables).
• Automate routine administrative tasks using Shell/Bash scripting or Python.
• Configure and manage backup and recovery processes using rsync, tar, or snapshot tools.
• Maintain and troubleshoot boot issues, kernel updates, and services.
• Monitor system health and performance using Nagios, Zabbix, Grafana, or similar tools.
• Enforce security hardening (SELinux, firewalld, patching, access control).
• Support virtualization and cloud environments (VMware, KVM, AWS, or Azure).
• Participate in incident management, problem management, and change management processes.
• Maintain accurate documentation of system configurations and operational procedures.