Job Summary

The Linux/Unix L3 Subject Matter Expert is responsible for advanced administration, troubleshooting, root cause analysis, engineering, and operational support of enterprise Linux and Unix workstation environments. The role provides Tier 3 technical leadership, drives automation and compliance, supports platform lifecycle activities, and works closely with support teams and customers to improve service reliability and performance. Linux/Unix L3 Subject Matter Expert (SME)\\\\r\\\\nRole Overview\\\\r\\\\nThe Linux/Unix L3 Subject Matter Expert is responsible for advanced administration, troubleshooting, root cause analysis, engineering, and operational support of enterprise Linux and Unix workstation environments. The role provides Tier 3 technical leadership, drives automation and compliance, supports platform lifecycle activities, and works closely with support teams and customers to improve service reliability and performance.\\\\r\\\\nRequired Qualifications\\\\r\\\\n• 7–10 years of relevant experience in Linux/Unix system administration and workstation support.\\\\r\\\\n• B.E. or B.Tech degree, or an equivalent technical qualification.\\\\r\\\\n• Strong hands-on experience with Red Hat Linux and Unix operating systems.\\\\r\\\\n• Experience supporting Linux/Unix systems in physical and virtualized environments.\\\\r\\\\n• Strong analytical, troubleshooting, and problem-solving capabilities.\\\\r\\\\nKey Responsibilities\\\\r\\\\n• Provide Tier 3 support for complex Linux/Unix workstation, operating system, application, service, and protocol issues.\\\\r\\\\n• Perform advanced troubleshooting and root cause analysis, and implement sustainable corrective and preventive actions.\\\\r\\\\n• Manage escalations from L1 and L2 support teams and provide technical guidance through resolution.\\\\r\\\\n• Build, configure, test, monitor, and maintain production Linux/Unix services and workstation environments.\\\\r\\\\n• Create and maintain hardened, optimized golden images for physical and virtual Linux desktops.\\\\r\\\\n• Plan and execute operating system builds, imaging, upgrades, migrations, patch preparation, and patch deployment.\\\\r\\\\n• Maintain system backups, file systems, and recovery procedures in accordance with organizational standards.\\\\r\\\\n• Develop and maintain scripts and scheduled jobs to automate deployment, administration, monitoring, and compliance activities.\\\\r\\\\n• Manage desktop applications, software packaging, and deployment across supported Linux/Unix environments.\\\\r\\\\n• Maintain operating system currency, security posture, and endpoint compliance through regular patching and remediation.\\\\r\\\\n• Recommend and implement platform, application, and database-related improvements to enhance reliability and performance.\\\\r\\\\n• Create, review, and maintain technical documentation, operational procedures, knowledge articles, and support records.\\\\r\\\\n• Collaborate with internal teams and customers to deliver technical solutions and support service improvement initiatives.\\\\r\\\\n• Participate in the on-call rotation and provide planned weekend support when required.\\\\r\\\\nTechnical Expertise\\\\r\\\\n• Red Hat Linux and Unix administration, configuration, and support.\\\\r\\\\n• Enterprise workstation and endpoint management.\\\\r\\\\n• Physical and virtual desktop engineering.\\\\r\\\\n• Operating system hardening, optimization, patching, imaging, and upgrades.\\\\r\\\\n• Shell scripting, task automation, and scheduled job management.\\\\r\\\\n• System monitoring, backup, recovery, and file system administration.\\\\r\\\\n• Application packaging, deployment, maintenance, and troubleshooting.\\\\r\\\\n• Incident, problem, change, and compliance management practices.\\\\r\\\\nProfessional Competencies\\\\r\\\\n• Ability to work independently with minimal supervision while meeting agreed targets and service commitments.\\\\r\\\\n• Strong collaboration and interpersonal skills in cross

Key Responsibilities

 Provide Tier 3 support for complex Linux/Unix workstation, operating system, application, service, and protocol issues. • Perform advanced troubleshooting and root cause analysis, and implement sustainable corrective and preventive actions. • Manage escalations from L1 and L2 support teams and provide technical guidance through resolution. • Build, configure, test, monitor, and maintain production Linux/Unix services and workstation environments. • Create and maintain hardened, optimized golden images for physical and virtual Linux desktops. • Plan and execute operating system builds, imaging, upgrades, migrations, patch preparation, and patch deployment. • Maintain system backups, file systems, and recovery procedures in accordance with organizational standards. • Develop and maintain scripts and scheduled jobs to automate deployment, administration, monitoring, and compliance activities. • Manage desktop applications, software packaging, and deployment across supported Linux/Unix environments. • Maintain operating system currency, security posture, and endpoint compliance through regular patching and remediation. • Recommend and implement platform, application, and database-related improvements to enhance reliability and performance. • Create, review, and maintain technical documentation, operational procedures, knowledge articles, and support records. • Collaborate with internal teams and customers to deliver technical solutions and support service improvement initiatives. • Participate in the on-call rotation and provide planned weekend support when required.

Skill Requirements

 Red Hat Linux and Unix administration, configuration, and support. • Enterprise workstation and endpoint management. • Physical and virtual desktop engineering. • Operating system hardening, optimization, patching, imaging, and upgrades. • Shell scripting, task automation, and scheduled job management. • System monitoring, backup, recovery, and file system administration. • Application packaging, deployment, maintenance, and troubleshooting. • Incident, problem, change, and compliance management practices.

Other Requirements

 Ability to work independently with minimal supervision while meeting agreed targets and service commitments. • Strong collaboration and interpersonal skills in cross-functional and customer-facing environments. • Ability to lead technical discussions, mentor team members, and communicate complex concepts clearly. • Effective time management, prioritization, and adaptability in changing operational environments. • Commitment to continuous learning through technical workshops, industry publications, and emerging technologies. • Experience working in Agile or similarly collaborative delivery environments is preferred.