Senior Linux/Unix Systems Engineer - Patch & HA

Exasoft Pte. Ltd.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Exasoft Pte. Ltd. in Singapore seeks an experienced Linux/Unix System Administrator to manage multiple server platforms (RHEL, HP-UX, Solaris, AIX) and drive patching, security updates and operational reliability.

You will lead patch assessments, automate tasks, monitor health, and support high-availability environments. The role requires 8–12 years of hands-on experience, strong troubleshooting skills, and willingness to work weekends and provide on-call support.

Qualifications

• 8–12 years of Linux/Unix system administration experience.
• Hands-on with RHEL, HP-UX, Solaris, and/or AIX environments.
• Strong OS patching, vulnerability management and patch assessment.
• Experience with BigFix, SCCM or equivalent patch tools.
• Knowledge of hardware/firmware patching and BIOS upgrades.
• Experience with pre/post-patching automation.
• Familiar with RAID, clustering and high-availability.
• Good communication; willing to work weekends and on-call.

Responsibilities

• Administer Linux/Unix environments, including RHEL, HP-UX, Solaris, and AIX servers.
• Manage OS patching, vulnerability remediation, and security updates across server environments.
• Perform patch assessments and recommend deployment plans based on security and operational requirements.
• Use patch management tools such as BigFix and SCCM to deploy and validate patches.
• Execute pre-patching and post-patching checks and automate routine patching tasks.
• Troubleshoot operating system, hardware, and patch deployment issues.
• Perform hardware and firmware patching, BIOS upgrades, and server maintenance.
• Support cluster management, RAID technologies, and high-availability environments.
• Monitor system logs, server health, and patch compliance.
• Follow change management procedures and support SLA-driven operations, including weekend shifts and on-call support.

Skills

Linux Admin

RHEL

HP-UX

Solaris

AIX

Patch Automation

On-call support

SLA-driven

Tools

BigFix

SCCM

Job description

Exasoft Pte. Ltd. in Singapore seeks an experienced Linux/Unix System Administrator to manage multiple server platforms (RHEL, HP-UX, Solaris, AIX) and drive patching, security updates and operational reliability.

You will lead patch assessments, automate tasks, monitor health, and support high-availability environments. The role requires 8–12 years of hands-on experience, strong troubleshooting skills, and willingness to work weekends and provide on-call support.