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 te

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