Unix System Administrator (L2/L3)

Unison Group; Kuala Lumpur; On-site; MYR 60,000 - 90,000; Full time

Job summary

Unison Group is looking for an experienced Unix System Administrator in Kuala Lumpur. The role demands strong expertise in server provisioning, OS administration, and troubleshooting of production servers.

The ideal candidate will work independently to manage critical server tasks, ensure server upgrades, and maintain overall system health. Proficiency in Red Hat, Solaris, and AIX systems is essential. Supporting production incidents and performing root cause analyses are also key responsibilities.

Qualifications

• Strong hands-on expertise in server provisioning and troubleshooting.
• Experience in OS administration and server upgrade activities.
• Ability to handle production server issues independently.

Responsibilities

• Provision physical/virtual Unix/Linux servers both manually and automatically.
• Install and configure operating systems.
• Troubleshoot OS-level issues independently.
• Support production incidents and critical escalations.

Skills

Unix/Linux administration

Troubleshooting

Server provisioning

Shell scripting

Tools

Red Hat Enterprise Linux

Oracle Solaris

AIX

Job description

Job Summary

We are looking for an experienced Unix System Administrator with strong hands‑on expertise in server provisioning, troubleshooting, OS administration, and server upgrade activities. The candidate should be capable of independently handling production server issues and supporting hosted applications without relying only on SOP/documentation.

This role requires strong problem‑solving ability and deep OS‑level administration experience across Unix/Linux environments.

Key Responsibilities

• Provision physical/virtual Unix/Linux servers (manual & automated)
• Install and configure operating systems
• Perform server build, deployment, and commissioning
• Troubleshoot OS‑level issues independently
• Analyze application issues from server perspective
• Perform in‑place and parallel server upgrades
• Manage server hardening and configuration
• Handle performance troubleshooting
• Troubleshoot boot issues, file system issues, service failures
• Monitor logs and system health
• Support production incidents and critical escalations
• Perform root cause analysis
• Work with application, database, and network teams

Technical Skills Required

Operating Systems

• Red Hat Enterprise Linux
• Oracle Solaris
• AIX
• Unix/Linux administration

Server Administration

• Server provisioning
• OS installation
• Kickstart / automated build tools
• Filesystem management
• User/group administration
• Service management

Troubleshooting

• Kernel / boot issue troubleshooting
• Performance analysis
• Disk / filesystem troubleshooting
• Process‑level debugging
• Log analysis

Scripting

• Shell scripting
• Automation basics

Infrastructure

• Virtualization knowledge
• Network troubleshooting basics
• Application hosting support