? Linux & Microsoft Azure Infrastructure Administrator

? Location: HCLTech Lucknow, Uttar Pradesh

? Shift: 24x7 Rotational Shifts

? Experience: 12 Years Role Summary

Responsible for the administration, maintenance, and support of enterprise Linux infrastructure hosted on Microsoft Azure. The role encompasses Linux operating system lifecycle management, Azure infrastructure administration, high-availability clustering, incident resolution, performance optimization, and compliance with organizational security and change management standards. Key Responsibilities

Administer, configure, and maintain enterprise Linux operating systems, including Red Hat Enterprise Linux (RHEL), SUSE Linux Enterprise Server (SLES), and SUSE Linux Enterprise (SUSE).

Provision, configure, and manage Linux workloads deployed on Microsoft Azure Virtual Machines.

Perform operating system installation, patching, upgrades, kernel updates, package management, and system hardening in accordance with approved change management procedures.

Configure, administer, and troubleshoot Pacemaker-based High Availability (HA) clusters to ensure business continuity and service availability.

Manage Azure infrastructure services, including Virtual Machines, Managed Disks, Virtual Networks (VNet), Network Security Groups (NSG), Storage Accounts, Load Balancers, Availability Sets/Availability Zones, Azure Monitor, and Log Analytics.

Monitor Linux servers and Azure infrastructure for availability, performance, capacity, and security, implementing corrective actions where required.

Diagnose and resolve Linux operating system, Azure compute, storage, networking, and clustering issues within established service level agreements (SLAs).

Perform root cause analysis (RCA) for recurring infrastructure incidents and implement preventive and corrective actions.

Execute system backup, restoration, disaster recovery, and maintenance activities in accordance with organizational policies.





Prepare and maintain technical documentation, operational procedures, configuration records, and infrastructure runbooks.

Collaborate with infrastructure, cloud, network, security, and application support teams during deployments, upgrades, migrations, and production support activities.

Ensure compliance with organizational security standards, audit requirements, and ITIL-based Incident, Change, Problem, and Configuration Management processes.

Participate in planned maintenance activities and provide on-call or production support as required.

Required Technical

Skills

Strong hands-on experience administering Linux operating systems:

Red Hat Enterprise Linux (RHEL)

SUSE Linux Enterprise Server (SLES)

SUSE Linux Enterprise (SUSE)

Extensive experience managing Linux workloads on Microsoft Azure.

Hands-on experience with:

Azure Virtual Machines

Azure Storage

Azure Managed Disks

Azure Virtual Network (VNet)

Network Security Groups (NSG)

Azure Load Balancer

Azure Monitor

Log Analytics

Azure Backup

Experience configuring and administering Pacemaker High Availability Clusters.

Strong knowledge of Linux operating system patching, security hardening, kernel management, and performance tuning.

Experience troubleshooting Linux server, Azure infrastructure, storage, networking, and cluster-related issues in enterprise production environments.

Understanding of system monitoring, capacity planning, backup, recovery, and disaster recovery processes.

Working knowledge of ITIL-based service management practices.

Qualified

Competencies

Strong analytical and troubleshooting capabilities.

Ability to manage multiple priorities in production environments.

Effective verbal and written communication skills.

Ability to collaborate across cross-functional technical teams.

Commitment to operational excellence, documentation accuracy, security compliance, and continuous service improvement. ? Interested candidates can share their profiles:

[email protected]

📌 Senior Linux System Administrator (Lucknow)
🏢 HCLTech
📍 Lucknow