Senior Systems Engineer

CORNERSTONE GLOBAL PARTNERS PTE. LTD.; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

Cornerstone Global Partners is seeking a Senior Systems Engineer to manage, maintain, and optimize enterprise IT infrastructure spanning multi-platform Linux (Red Hat) and Solaris environments. You will be responsible for system architecture, server virtualization, high-availability clustering, disaster recovery execution, and ensuring 24/7 system reliability.

The role requires hands-on experience in Unix/Linux systems, virtualization, clustering, and automation, with a focus on reliability and

Qualifications

• Demonstrated strong hands-on experience in Unix/Linux Systems Engineering within enterprise environments.
• Practical experience in system administration, infrastructure support, troubleshooting, and production environments.

Responsibilities

• Manage, maintain, and optimize enterprise IT infrastructure across Linux and Solaris platforms.
• Handle virtualization, clustering, DR, and automation tasks.
• Implement and maintain configuration management and security controls.

Skills

Unix/Linux

System administration

Troubleshooting

Production environments

Education

Bachelor's or Master’s degree in Computer Science or Information Technology

Tools

Ansible

Red Hat Satellite Server

Veritas Cluster Server

VMware

KVM

Job description

We are seeking a Senior Systems Engineer to manage, maintain, and optimize enterprise IT infrastructure spanning multi-platform Linux (Red Hat) and Solaris environments. In this role, you will be responsible for system architecture, server virtualization, high-availability clustering, configuration management, disaster recovery execution, and maintaining 24/7 system reliability.

Key Responsibilities

Linux & Solaris System Administration

• Provision, build, configure, and maintain production, development, and testing environments for Red Hat Enterprise Linux (RHEL 5/6/7/8/9/10) and Oracle Solaris (10/11) platforms.

• Manage system performance, memory, CPU, and disk utilization statistics across physical and virtual environments.

• Execute quarterly OS patching and package management using Red Hat Satellite Server in coordination with application and database teams.

• Perform OS, kernel, and firmware upgrades, alongside root-cause analysis (RCA) and hardware troubleshooting with vendors.

Virtualization & Storage Management

• Manage virtual machine operations including deployment using templates, VM cloning, snapshot management, and migrations.

• Configure and administer logical volumes using LVM, ZFS, VxVM (Veritas Volume Manager), and Root Storage Mirroring.

• Administer Solaris Zones, LDOMs, and VMware/KVM virtualization technologies.

Clustering, High Availability & Disaster Recovery

• Install, configure, and troubleshoot high-availability cluster solutions including Veritas Cluster Server (VCS), Red Hat Cluster, and Sun Cluster.

• Facilitate resource failovers and participate in bi-annual Disaster Recovery (DR) drills.

Automation & Security

• Maintain and execute configuration management and infrastructure automation tasks using Ansible.

• Configure and maintain system security using SELinux, iptables, NIS, LDAP, and network routing/bonding configurations.

Key Requirements & Qualifications

Experience

• Demonstrated strong hands-on experience in Unix/Linux Systems Engineering within enterprise environments.

• Practical experience in system administration, infrastructure support, troubleshooting, and production environments.

Core Technical Expertise

• OS Platforms: RHEL (5 through 10) and Oracle Solaris (10/11).

• Storage & Volume Management: LVM, VxVM, ZFS, SVM.

• Clustering: Veritas Cluster Server (VCS), Red Hat Cluster, Sun Cluster.

• Virtualization: LDOMs, Solaris Zones, VMware, KVM.

• Automation Tools: Ansible, Red Hat Satellite Server.

• Hardware Platforms: Sun/Oracle SPARC (T-Series, M-Series), HP ProLiant (BL/DL Series), Lenovo/Sun x86 servers.

Operational Availability

• Ability and willingness to work on a 24/7 rotational shift schedule, including night shifts, weekends, and public holidays, as required by operational schedules.

Education & Certifications (Preferred)

• Bachelor’s, or Master’s degree in Computer Science, Information Technology, or equivalent practical experience.

• Red Hat Certified System Administrator (RHCSA) / Red Hat Certified Engineer (RHCE).

• Red Hat Certified Specialist in Ansible Automation.
  

Equal Opportunity Statement

Cornerstone Global Partners (EA License Number: 19C9859) is an affirmative equal-opportunity employer and recruitment firm. We evaluate qualified applicants without regard to race, colour, religion, creed, gender, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class.