L3 Linux & Red Hat Administrator

Role Overview

We are looking for an experienced L3 Linux Administrator with strong hands-on expertise in RHEL administration, Red Hat Clustering, Pacemaker Cluster, Red Hat Satellite, and OS patching. The role involves managing mission-critical Linux infrastructure, ensuring high availability, security, performance, and stability across 24x7 production environments.

Key Roles & Responsibilities

• Administer, configure, troubleshoot, and maintain RHEL/Linux servers in enterprise production environments.
• Hands-on experience in Red Hat HA Clustering and Pacemaker Cluster, including cluster configuration, resource management, failover/failback, fencing, and quorum.
• Manage Red Hat Satellite for repository management, patching, package updates, and system lifecycle management.
• Plan and execute OS patching, upgrades, security updates, and vulnerability remediation.
• Perform Linux OS hardening, VAPT remediation, performance monitoring, and root-cause analysis.
• Automate routine administrative tasks using Ansible and playbooks.
• Troubleshoot production incidents and provide L3 support for critical infrastructure issues.
• Support DR activities, backup/recovery, and infrastructure monitoring.
• Coordinate with database, network, storage, security, and application teams.
• Maintain technical documentation and follow ITIL-based incident, problem, and change management processes.

Mandatory Technical Skills

• Strong hands-on experience in RHEL/Linux Administration.
• Red Hat HA Clustering and Pacemaker Cluster.
• Red Hat Satellite Administration.
• OS Patching, Upgrades, and Lifecycle Management.
• Linux troubleshooting, security hardening, and VAPT remediation.
• Ansible automation and scripting.
• Linux performance monitoring, networking, and production incident management.

Good to Have

• VMware, SAN/Storage, Veeam, Veritas NetBackup, and SNMP monitoring tools.
• OS-level support for Oracle, PostgreSQL, MySQL, and MongoDB.
• Experience in 24x7 mission-critical production environments.

Education: Bachelors degree in Computer Science, IT, Engineering, or an equivalent qualification. Relevant Red Hat and Ansible certifications will be an added advantage.