Unix System Administrator (L2/L3)

Hong Kong Unison Limited; Kuala Lumpur; On-site; MYR 90,000 - 150,000; Full time

Job summary

Hong Kong Unison Limited seeks an experienced Unix System Administrator to manage production Unix/Linux servers with hands-on expertise in provisioning, troubleshooting, OS administration, and server upgrades. The candidate should independently handle production server issues and support hosted applications beyond SOPs.

This role requires strong problem-solving abilities and deep OS-level administration experience across Unix/Linux environments, ensuring reliability and performance of hosted

Qualifications

• Experienced in Unix/Linux administration and OS maintenance.
• Ability to provision and upgrade servers.
• Strong problem-solving and independent work style.

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

Skills

Unix/Linux administration

Server provisioning

Troubleshooting

Scripting

Tools

Kickstart

Automation tooling

Job description

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.

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