Unix L2/L3 Support Engineer

We are seeking an experienced Unix L2/L3 Support Engineer with strong expertise in Linux (Red Hat), Solaris, and AIX administration to provide 24x7 operational support for enterprise data centre and cloud environments.

The role involves incident management, problem determination, system administration, automation, infrastructure support, performance optimisation, patch management, and ensuring the high availability of critical business services.

The successful candidate will possess strong troubleshooting skills across Unix platforms, cloud technologies, automation tools, clustering solutions, and infrastructure management frameworks.

Key Responsibilities

Unix/Linux/Solaris/AIX Administration

• Provide L2 administration and operational support for Linux, Solaris, and AIX servers across data centre and cloud environments.

• Perform installation, configuration, administration, patching, upgrades, migration, and lifecycle management of Unix/Linux platforms.

• Manage virtualisation technologies, including:

  • Solaris Zones and LDOMs

  • AIX LPARs and VIOS

• Perform OS hardening, capacity management, performance tuning, and system optimisation.

• Troubleshoot server, operating system, hardware, storage, and application-related issues.

• Handle break-fix activities and service restoration within agreed SLAs.

• Create and maintain environments for batch processing and associated reporting systems.

Infrastructure & Platform Management

• Manage Red Hat Satellite for patching, provisioning, and lifecycle management.

• Administer Centrify, IBM GPFS, Puppet, and Ansible environments.

• Support Docker and Kubernetes platforms.

• Manage AWS and Azure virtual machine deployments and administration.

• Support storage integration, clustering, partitioning, and virtualisation technologies.

• Provide support for high availability (HA) and cluster technologies.

Automation & DevOps

• Apply hands-on experience in Ansible and/or Terraform for infrastructure provisioning, configuration management, and automation.

• Use Shell Scripting and Python to automate operational and administrative tasks.

• Develop, maintain, and enhance automation workflows, reusable playbooks, and Infrastructure-as-Code (IaC) solutions.

• Drive continuous improvement initiatives to reduce manual effort and improve operational efficiency.

• Automate patching, monitoring, reporting, server provisioning, and compliance-related activities.

Incident, Problem & Change Management

• Monitor infrastructure health and proactively address issues.

• Participate in incident, problem, and change management processes.

• Perform root cause analysis (RCA) and provide corrective and preventive actions.

• Collaborate with application, network, cloud, storage, and security teams during major incidents.

• Support system integration and production rollout activities.

24x7 Operational Support

• Provide 24x7 operational support, monitoring, incident management, and troubleshooting to ensure service availability and business continuity.

• Participate in shift-based support, on-call rotations, weekend support, and major incident management.

• Ensure compliance with SLA, OLA, and operational standards.

• Support planned maintenance activities and emergency changes whenever required.

Technical Skills

Operating Systems

• Red Hat Enterprise Linux (RHEL)

• Sun Solaris

• IBM AIX

Unix Technologies

• Solaris LDOMs

• AIX LPARs

• AIX VIOS

• GPFS

• Centrify

Configuration Management & Automation

• Ansible

• Terraform

• Puppet

• Shell Scripting

• Python

• Infrastructure as Code (IaC)

Cloud Platforms

• AWS:

  • EC2

  • S3

  • ELB

  • Auto Scaling

• Microsoft Azure

• GCP

• OpenShift

• VM Deployment and Administration

Containerisation & Orchestration

• Docker

• Kubernetes

Monitoring & Operations

• Performance Monitoring

• Capacity Management

• Patch Management

• Incident Management

• Problem Management

• Change Management

• Root Cause Analysis

High Availability & Clustering

• High Availability (HA) Solutions

• OS Clustering Technologies

Required Qualifications

• Bachelor's Degree in Engineering, Computer Science, Information Technology, or a related field.

• Minimum 6+ years of experience in Unix/Linux system administration and support.

• Strong troubleshooting experience in Linux, Solaris, and AIX environments.

• Experience supporting enterprise-scale infrastructure in data centre and cloud environments.

• Excellent verbal and written communication skills.

• Strong analytical, problem-solving, and customer management skills.

Preferred Certifications

One or more of the following certifications is preferred:

• RHCSA - Red Hat Certified System Administrator

• RHCE - Red Hat Certified Engineer

• Solaris Certified Administrator

• Docker Certified Associate

• AWS SysOps Administrator

• AWS Solutions Architect

• Microsoft Azure Administrator

• Microsoft Azure Solutions Architect

Desired Competencies

• Strong customer focus and stakeholder management skills.

• Ability to work independently in a 24x7 support environment.

• Experience in large enterprise infrastructure operations.

• Knowledge of ITIL processes and service management practices.

• Continuous improvement mindset with a focus on automation and operational excellence.

If you believe you fit the requirements for the role, please submit your application below or drop us an email directly quoting the job title.

Due to an anticipated high volume of applicants, we regret that only shortlisted candidates will be notified. The information provided is for recruitment purposes only.

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.

Scarlett Zhang Jifan
[Confidential Information]

EA Registration Number: R26159541.

Cornerstone Global Partners Pte Ltd (EA License: 19C9859)