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Unison Group Linkedin · Posted 2mo ago

Unix System Administrator (L2/L3)

Kuala Lumpur

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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
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