UNIX/LINUX ADMINISTRATOR

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:

o EC2

o S3

o ELB

o 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.

Avatar Techno Services Pte Ltd. is a Consulting and Solution Provider company in the Information Technology Industry, specialized in providing sound, secure and cost-effective IT solutions to Small & Medium enterprises thereby empowering and accelerating their growth.

Incorporated in 2019, Avatar Techno Services was initially under the banner of ILC Pte Ltd., providing IT Consulting services in Singapore to a handful companies in Singapore and overseas.

Within a short-span, we have grown from simple operation providing mono-service, to a team of dedicated staff, each of which is a professional in its own field.

We have a solid reputation in the technology industry for providing excellent services to our clients. Our values are represented by our integrity, thought leadership, and commitment to maintaining a high-level of excellence in the constantly evolving world of Information Technology. We strive to build a long-lasting relationship with our customers and client satisfaction is our key performance indicator. We take pride in becoming a preferred partner for most of our clientele.

Growing over the years with our maturity in service and excellence, we progress with a clear vision of brilliance in IT.

Avatar Techno Services provides customers consulting, integration, and implementation services and specialized in bringing business process capabilities, industry experience, and solution & market expertise that can help our clientele to deploy IT solutions, maximize functionality, and rapidly achieve Return on Investment