UNIX/LINUX ADMINISTRATOR

AVATAR MODERN TECHNO SERVICES PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

AVATAR MODERN TECHNO SERVICES PTE. LTD. seeks an experienced Unix L2/L3 Support Engineer to deliver 24x7 operational support for enterprise datacenter and cloud environments.

You will handle incident management, system administration, automation, and performance optimization across Linux, Solaris, and AIX platforms. Key responsibilities include L2/L3 support, patching, lifecycle management, HA, and automation using Ansible/Terraform.

Qualifications

• Bachelor's Degree in Engineering, Computer Science, Information Technology, or 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 center and cloud environments.
• Excellent verbal and written communication skills.
• Strong analytical, problem-solving, and customer management skills.

Responsibilities

• Provide L2 administration and operational support for Linux, Solaris, and AIX servers across Data Center and Cloud environments.
• Perform installation, configuration, administration, patching, upgrades, migration, and lifecycle management of Unix/Linux platforms.
• Manage virtualization technologies including Solaris Zones and LDOMs, AIXLPARs and VIOS.
• OS hardening, capacity management, performance tuning, and system optimization.
• Troubleshoot server, operating system, hardware, storage, and application-related issues.
• Handle break-fix activities and service restoration within SAMs.

Skills

Linux

Solaris

AIX

RHEL

Shell scripting

Python

Automation

Ansible

Terraform

Puppet

Docker

Kubernetes

AWS

Azure

Education

Bachelor's Degree in Engineering, Computer Science, IT

Tools

Ansible

Terraform

Puppet

Docker

Kubernetes

GPFS

Centrify

VMware/VIP

Job description

Job Description & Requirements

We are seeking an experienced Unix L2/L3 Support Engineer with strong expertise in Linux (RedHat), Solaris, and AIX administration to provide 24x7 operational support for enterprise datacenter and cloud environments. The role involves incident management, problem determination, system administration, automation, infrastructure support, performance optimization, patch management, and ensuring high availability of critical business services.

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

Key Responsibilities

Unix/Linux/Solaris/AIXAdministration

ProvideL2 administration and operational support for Linux, Solaris, and AIX servers across Data Center and Cloud environments.

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

Manage virtualization technologies including:

Solaris Zones and LDOMs

AIXLPARs and VIOS

Perform OS hardening, capacity management, performance tuning, and system optimization.

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 virtualization technologies.

Provide support for HA and Cluster technologies.

Automation& DevOps

Hands‑on experience in Ansible and/or Terraform for infrastructure provisioning, configuration management, and automation.

Strong scripting skills using Shell Scripting, 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.

24x7Operational Support

Provide 24x7operational support, monitoring, incident management, and trouble shooting 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

SolarisLDOMs

AIXLPARs

AIXVIOS

GPFS

Centrify

ConfigurationManagement & Automation

Ansible

Terraform

Puppet

ShellScripting

Python

Infrastructureas Code (IaC)

CloudPlatforms

AWS:

EC2

S3

ELB

Auto Scaling

Microsoft Azure

GCP

Openshift

VM Deployment and Administration

Containerization& Orchestration

Docker

Kubernetes

Monitoring& Operations

Performance Monitoring

Capacity Management

Patch Management

Incident Management

Problem Management

Change Management

Root Cause Analysis

HighAvailability & Clustering

High Availability (HA) Solutions

OS Clustering Technologies

Required Qualifications

Bachelor's Degree in Engineering, Computer Science, Information Technology, or 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 center 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 preferred:

RHCSA – Red Hat Certified System Administrator

RHCE – Red Hat Certified Engineer

Solaris Certified Administrator

Docker Certified Associate

AWS Sys Ops 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 focus on automation and operational excellence.