HPC System Admin

OPUS IT Services Pte Ltd; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

OPUS IT Services Pte Ltd in Singapore seeks a core Linux/HPC infrastructure operations expert to keep the compute and OS environment healthy. You will operate and support login nodes, compute nodes, and HCI/virtualisation systems, ensuring high availability and smooth daily operations.

The role emphasizes OS lifecycle management, configuration management, incident troubleshooting, and change management, with a focus on proactive monitoring, maintenance, and rapid problem resolution.

Qualifications

• ≥3 years relevant experience in Linux/HPC operations.
• ITIL Foundation or equivalent, or higher.
• RHCSA or equivalent certification or higher.

Responsibilities

• Operate and support compute nodes.
• Support login nodes.
• Manage OS lifecycle.
• Perform configuration management.
• Maintain HCI/virtualisation systems.
• Troubleshoot OS/system problems.
• Monitor system health.
• Investigate hardware/OS-related incidents.
• Support planned maintenance.
• Perform approved changes.
• Escalate hardware/OEM issues where necessary.
• Maintain system configuration records.
• Support incident recovery.

Skills

Linux administration

Red Hat Linux

System troubleshooting

Linux system lifecycle management

Configuration management

Shell scripting

Compute-node administration

Login-node administration

HCI/virtualisation

Monitoring

Incident troubleshooting

Change management

Education

RHCSA or equivalent/higher

ITIL Foundation or equivalent/higher

Job description

What the role does

This is the core Linux/HPC infrastructure operations role.

The role is responsible for keeping the compute and operating-system environment healthy.

Day-to-day scope

• Operate and support compute nodes.
• Support login nodes.
• Manage OS lifecycle.
• Perform configuration management.
• Maintain HCI/virtualisation systems.
• Troubleshoot OS/system problems.
• Monitor system health.
• Investigate hardware/OS-related incidents.
• Support planned maintenance.
• Perform approved changes.
• Escalate hardware/OEM issues where necessary.

The baseline specifically describes this role around OS lifecycle, configuration management, login/compute/HCI operations and support.

Maintenance scope

• OS patching.
• System updates.
• Configuration changes.
• Validation after maintenance.
• Troubleshooting failed changes.
• Maintaining system configuration records.
• Supporting incident recovery.

Incident scope

Examples of issues this person would be expected to deal with include:

• Login node unavailable.
• Compute node unavailable.
• OS failure.
• System configuration issue.
• Node performance issue.
• HCI/virtualisation issue.
• Post-patch problem.

Key skills

• Linux administration
• Red Hat Linux
• System troubleshooting
• Linux system lifecycle management
• Configuration management
• Shell ing
• Compute-node administration
• Login-node administration
• HCI/virtualisation
• Monitoring
• Incident troubleshooting
• Change management

Minimum requirements

• ≥3 years relevant experience
• ITIL Foundation or equivalent/higher
• Red Hat Certified System Administrator (RHCSA) or equivalent/higher