Senior UNIX/Linux Engineer (L3) – Automation & InfraOps

Exasoft Pte. Ltd.; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

Exasoft Pte. Ltd. is seeking a Linux/UNIX Systems Engineer to build, configure, and manage Linux servers across Development, Test, UAT, and Production environments. You will harden security, patch systems, and ensure compliance while designing HA architectures.

The role requires strong Shell and Python automation, experience with Veritas Cluster, VMware, and cloud exposure (AWS/Azure). You will collaborate with multiple teams and document runbooks, DR procedures, and SOPs.

Qualifications

• Strong hands-on experience in Linux/UNIX Administration, particularly RHEL and Oracle Linux.
• Experience in UNIX/Linux server build, configuration, troubleshooting, and security hardening.
• Strong Shell scripting and Python automation skills.
• Experience with Veritas Cluster / VCS, FSS, High Availability, and Clustering solutions.
• Knowledge of SAN/NAS storage and LVM administration.
• Experience with VMware and exposure to AWS/Azure environments.
• Strong understanding of patching, vulnerability remediation, compliance, and infrastructure security.
• Experience with infrastructure automation, configuration management, and IaC practices.
• Strong L3 troubleshooting, project implementation, documentation, and stakeholder coordination skills.
• IBM MQ experience is an added advantage.

Responsibilities

• Build, configure, and administer UNIX/Linux servers across Development, Test, UAT, and Production environments.
• Perform OS security hardening, patching, vulnerability remediation, and compliance activities.
• Configure system services, networking, storage, and high-availability environments.
• Provide L3 infrastructure support for project deployments, application onboarding, and production releases.
• Develop Shell/Python automation for server provisioning and operational activities.
• Implement configuration management, standardization, and Infrastructure-as-Code practices.
• Collaborate with application, database, network, cloud, and security teams for infrastructure readiness.
• Prepare technical design documents, build documents, SOPs, runbooks, and disaster recovery documentation.
• Support deployment, cutover, capacity/performance analysis, and knowledge transfer activities.

Skills

Linux Administration

Shell scripting

Python automation

High Availability

Infrastructure as Code

Veritas Cluster (VCS)

VMware

AWS/Azure exposure

Storage administration (SAN/NAS, LVM)

Security hardening

Troubleshooting

Documentation

Tools

Veritas Cluster / VCS

VMware

AWS

Azure

Job description

Exasoft Pte. Ltd. is seeking a Linux/UNIX Systems Engineer to build, configure, and manage Linux servers across Development, Test, UAT, and Production environments. You will harden security, patch systems, and ensure compliance while designing HA architectures.

The role requires strong Shell and Python automation, experience with Veritas Cluster, VMware, and cloud exposure (AWS/Azure). You will collaborate with multiple teams and document runbooks, DR procedures, and SOPs.