SeniorAdministrator - Linux, Red Hat Cluster, Red Hat Satellite

HCL Technologies Limited; Dadri; On-site; INR 2,200,000 - 3,400,000; Full time

Job summary

HCL Technologies Limited is seeking a Senior Administrator for Linux, Red Hat Cluster, and Red Hat Satellite in Noida, Uttar Pradesh. The role focuses on advanced Linux administration across on-premises and cloud platforms, owning incidents, and driving automation to improve reliability and performance.

Responsibilities include patching, tuning, provisioning, and supporting cloud workloads (AWS, OCI) with IaC using Terraform, plus container platforms (Kubernetes/Docker).

Qualifications

• Experience in hybrid cloud environments (on-prem + cloud).
• Knowledge of configuration management tools (Ansible, Puppet, Chef).
• Familiarity with backup solutions and storage systems.

Responsibilities

• Perform advanced administration of Linux servers (RHEL, CentOS, Ubuntu).
• Handle L3-level troubleshooting for OS, CPU, memory, disk, kernel, and performance issues.
• Manage OS patching, upgrades, kernel tuning, and image lifecycle.
• Own and resolve P1/P2 incidents related to Linux systems.
• Develop automation scripts (Shell/Python) for operational efficiency.
• Support Kubernetes-based platforms and container hosts.
• Monitor system performance and ensure availability.

Skills

Advanced Linux administration

System performance tuning

Shell scripting

Python scripting

Cloud platforms (AWS, OCI)

Infrastructure as Code: Terraform

Tools

Terraform

Kubernetes

Docker

Ansible

VMware

Nasuni

Job description

SeniorAdministrator - Linux, Red Hat Cluster, Red Hat Satellite SeniorAdministrator - Linux, Red Hat Cluster, Red Hat Satellite India Job Description SeniorAdministrator - Linux, Red Hat Cluster, Red Hat Satellite Noida, Uttar Pradesh

Job Summary

The Linux L2 Engineer is responsible for advanced administration, troubleshooting, and optimization of Linux systems across on-premises and cloud platforms. The role includes owning complex incidents, driving automation, ensuring system reliability, and supporting hybrid infrastructure services integrated with storage, cloud, virtualization, and enterprise tooling.

Key Responsibilities

Perform advanced administration of Linux servers (RHEL, CentOS, Ubuntu) in enterprise environments.

• Handle L3-level troubleshooting for OS, CPU, memory, disk, kernel, and performance issues.
• Manage OS patching, upgrades, kernel tuning, and image lifecycle.
• Perform server provisioning, decommissioning, and configuration management.
• Own and resolve P1/P2 incidents related to Linux systems.
• Perform root cause analysis (RCA) and implement preventive actions.
• Support change, release, and configuration management processes.
• Proactively monitor system performance and ensure availability.
• Analyze CPU, memory, IO, filesystem usage and optimize system performance.
• Implement proactive measures and automation for self-healing systems.
• Support Linux workloads on AWS and OCI, including:
  • VPC, networking, load balancers, storage (ZFS, EBS-like services)
  • Monitoring and alerting
• Manage Linux-based workloads on IaaS and PaaS platforms, including container hosts.
• Build and support infrastructure provisioning using Terraform (IaaS).
• Develop automation scripts (Shell/Python) for operational efficiency.
• Support Kubernetes-based platforms (SRE/PRE scope).
• Manage and troubleshoot container host environments.
• Support Linux integration with NAS solutions such as Nasuni Filers.
• Monitor filer health, cache utilization (

Skill Requirements

Operating Systems: RHEL, CentOS, Ubuntu

• Core Linux Skills: LVM, filesystem management, systemd, networking
• Kernel tuning, performance troubleshooting
• Scripting & Automation: Shell scripting, Python
• Cloud Platforms: AWS, OCI
• Infrastructure as Code: Terraform
• Containers: Kubernetes, Docker
• Monitoring Tools: Nagios, Prometheus, CloudWatch, OEM tools
• Storage & NAS: Nasuni, NFS, CIFS
• Virtualization: VMware (basic integration knowledge)

Other Requirements

• Experience in hybrid cloud environments (on-prem + cloud)
• Exposure to DevOps/SRE practices
• Knowledge of configuration management tools (Ansible, Puppet, Chef)
• Familiarity with enterprise backup solutions (Dell ABS, Data Domain)
• Understanding of networking concepts (DNS, TCP/IP, firewall basics)
• Experience in event correlation and monitoring optimization

Hands-on with:

• VMware Aria Operations (vROps), Aria Automation, Log Insight
• Dell VxRail / PowerEdge infrastructure
• Storage (vSAN, NAS, Dell Unity, ZFS – basic integration)
• Lifecycle Manager (LCM), patching & upgrades
• Monitoring & alerting tools (Datadog, SolarWinds, etc.)
• Basic scripting: PowerCLI / PowerShell

Preferred Skills

Experience in:

• Hybrid cloud environments (AWS, OCI basics)
• Terraform / Ansible automation
• Backup tools (Data Domain, Veeam, Commvault)
• Security & vulnerability remediation (Qualys, patching cycles)
• Familiarity with: ITIL processes & ServiceNow

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.