Sr Technical Lead (Support & Operations)

HCL Technologies Limited; Singapore; On-site; SGD 100,000 - 156,000; Full time

Job summary

HCL Technologies Limited in Singapore seeks an experienced Senior Unix Engineer (L2/L3) to provide 24x7 operational support for enterprise datacenter and cloud environments, including incident management, troubleshooting, automation, and high availability across Linux, Solaris, and related stacks.

You will oversee patching, system administration, virtualization, and IaC workflows using Ansible, Terraform, Puppet, and related tools, collaborating with cross-functional teams to ensure service

Qualifications

• Bachelor's Degree in Engineering, Computer Science, Information Technology, or related field.
• 6+ years of Unix/Linux system administration and support.
• Strong troubleshooting in Linux, Solaris, and AIX environments.
• Experience supporting enterprise-scale infrastructure in data center and cloud environments.
• Excellent verbal and written communication skills.
• Analytical, problem-solving, and customer management skills.

Responsibilities

• Provide L2/L3 Unix/Linux/Solaris administration and operational support across Data Center and Cloud environments.
• Perform installation, configuration, patching, upgrades, migrations, and lifecycle management of Unix/Linux platforms.
• Manage Red Hat Satellite for patching, provisioning, and lifecycle management.
• Support Docker and Kubernetes platforms and cloud VM deployments (AWS/Azure/GCP).
• Hands-on in Ansible and/or Terraform for IaC and automation workflows.
• Develop and maintain automation scripts in Shell and Python to improve efficiency.
• Drive continuous improvement to reduce manual effort and enhance reliability.
• Support incident, problem, change, and RCA processes with cross-functional teams.

Skills

Unix/Linux

Solaris

Troubleshooting

Automation

Scripting

Cloud

HA/Clustering

Education

Bachelor's Degree in Engineering/CS/IT

Tools

RH Satellite

GPFS

Centrify

Puppet

Ansible

Terraform

Docker

Kubernetes

Job description

Sr Technical Lead (Support & Operations) Singapore

Job Summary

Experience: L2 : 6+ Years
Support Coverage: 24x7 Shift Support
Location: Noida

We are seeking an experienced Unix L2/L3 Support Engineer with strong expertise in Linux (RedHat), Solaris 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

Provide L2 administration and operational support for Linux, Solaris, 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 ZFS and LDOMs

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, 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.

Skill Requirements

Operating Systems

Red Hat Enterprise Linux (RHEL)

Sun Solaris

Unix Technologies

Solaris LDOMs

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

Containerization & 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 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.

Other Requirements

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.

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 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 focus on automation and operational excellence.

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending June 2026totaled $14.8billion.