Job Summary

STEM / OS Upgrade Engineer – Level-3 with 9+ years of experience in enterprise Windows/Linux administration, OS lifecycle management, upgrades, migrations, patching, automation, and platform operations. Responsible for planning and executing complex OS upgrades, compatibility assessments, technical remediation, security hardening, vulnerability remediation, automation, major incident resolution, and platform modernization across physical, virtual, and cloud environments.

Key Responsibilities

Lead enterprise Windows and Linux OS upgrade, migration, and lifecycle-management activities. Perform pre-upgrade assessments, compatibility checks, dependency analysis, and readiness validation. Develop detailed implementation, validation, remediation, and rollback plans for OS upgrades. Execute OS patching, version upgrades, migrations, and platform technology-refresh activities. Troubleshoot complex OS, boot, patching, configuration, performance, driver, and application compatibility issues. Automate OS patching, upgrades, health checks, validation, and repetitive operational activities. Support server migrations across physical, VMware/virtualized, and cloud environments. Drive OS security hardening, vulnerability remediation, and configuration-compliance activities. Lead critical platform incidents and perform Root Cause Analysis (RCA) for OS and upgrade-related failures. Monitor platform health, capacity, performance, and OS lifecycle/EOL risks. Support backup/recovery, High Availability, and Disaster Recovery requirements. Coordinate with Application, Database, Cloud, Cybersecurity, Network, and Infrastructure teams for upgrade activities.



Drive platform standardization, technical-debt remediation, and continuous service improvement. Provide L3 technical guidance and escalation support to L1/L2 platform operations teams. Maintain OS standards, SOPs, upgrade runbooks, technical documentation, and knowledge articles.

Skill Requirements

Strong hands-on expertise in Windows Server and Linux administration. Extensive experience with OS upgrades, migrations, patching, and lifecycle management. Solid knowledge of Windows Server, Red Hat Enterprise Linux (RHEL), Ubuntu, SUSE, or equivalent enterprise Linux platforms. Experience with enterprise patching and configuration-management technologies. Strong troubleshooting knowledge across OS, compute, storage, networking, services, and application dependencies. Experience with VMware/virtualization and exposure to AWS, Azure, and/or GCP environments. Hands-on automation experience using Ansible, PowerShell, Python, and Shell scripting. Knowledge of vulnerability remediation, security hardening, configuration compliance, and OS security baselines. Understanding of High Availability, Backup/Recovery, and Disaster Recovery. Experience with OS lifecycle/EOL management and platform modernization. Strong knowledge of Incident, Major Incident, Problem, Change Management, and RCA. Strong technical troubleshooting, documentation, stakeholder coordination, and leadership skills. Relevant Microsoft, Red Hat, SUSE, VMware, or Cloud certifications preferred.

Must Have Skill

Amazon Elastic Kubernetes Service,AWS CloudFormation,PaaS - AWS,Terraform,Linux,Kubernetes

Good to Have Skill

Other Requirements

NA

📌 Track Manager - Kubernetes, Terraform (India)
🏢 HCLTech
📍 India