Senior Linux Infrastructure Operations Engineer

Your role

• System Installation and Configuration: Deploy and configure Linux-based operating systems (RHEL, Oracle Linux) on servers including setting up network parameters, storage, and security settings.
• User Management: Administer centralized authentication and identity management platforms such as Red Hat IdM. Create and maintain user groups, role-based access controls (RBAC), and host-based access controls. Configure and manage sudo policies, privileged command delegation, and privileged access monitoring. Perform regular access reviews and recertification activities to identify excessive permissions and inactive accounts.
• Patching Management: Administer and maintain software repositories, content views, and package management infrastructure using Red Hat Satellite. Deploy software updates, patches, hotfixes, and security remediations via Ansible Automation Platform. Ensure all servers remain compliant with organizational security, vulnerability management, and software lifecycle policies. Troubleshoot package installation, repository connectivity, dependency conflicts, and software update failures. Generate compliance and patch status reports for management, audit, and security teams.
• Server Maintenance: Maintain the health, stability, and security of Linux server environments, primarily Red Hat Enterprise Linux (RHEL) and Oracle Linux (OEL). Register and manage Linux servers within Red Hat Satellite. Apply and maintain security hardening standards, ensuring compliance with organizational security requirements. Maintain server inventories, configuration baselines, and lifecycle documentation. Troubleshoot and resolve server-related incidents, including hardware, operating system, and storage. Automate routine maintenance activities using Ansible, shell scripting, and enterprise automation platforms.
• Monitoring and Performance Optimization: Monitor server health, system performance, resource utilization, and service availability across physical and virtual Linux environments. Investigate, troubleshoot, and resolve performance bottlenecks affecting CPU, memory, storage, network, and application services. Perform regular system health checks and optimisation activities to maximize uptime, efficiency, and operational stability. Analyse system metrics, logs, and audit data to identify recurring incidents, root causes, and opportunities for automation and improvement. A working knowledge of SCOM monitoring tool and ServiceNow is an asset.
• Troubleshooting and Issue Resolution: Diagnose, investigate, and resolve complex Linux operating system, network, storage, and infrastructure issues across enterprise environments. Perform root cause analysis (RCA) for incidents and recurring problems, implementing permanent corrective actions to prevent reoccurrence. Lead the resolution of critical production incidents, ensuring minimal service disruption and adherence to agreed service levels. Troubleshoot issues related to RHEL, virtualization platforms, identity management, storage, networking, backup solutions, and automation tools. Develop and maintain troubleshooting procedures, knowledge articles, and technical documentation to improve operational effectiveness. Conduct post-incident reviews and recommend service improvements, configuration changes, and preventative maintenance activities.
• Backup and Disaster Recovery: manage system backup to ensure data integrity and contribute to disaster recovery plan activation or testing.
• Shell Scripting and Automation: Code and maintain shell scripts and automation tools to streamline repetitive tasks and improve system efficiency. Automate routine administrative tasks using shell scripting / Ansible. Knowledge of Ansible, playbook and YAML is desired.
• Virtualization: Manage virtual machines (e.g., VMware, Nutanix)
• System Security Auditing and Compliance: Conduct security audits and ensure Linux systems comply with relevant security standards and policies.
• Continuous Learning: Stay up to date with the latest advancements in Linux technologies and acquire new skills to enhance system administration capabilities.
• Collaboration: Coordinate with other IT teams, developers, and stakeholders to support various projects and ensure smooth integration of Linux systems with other components.
• Documentation: Maintain a comprehensive documentation of system configurations, procedures, and troubleshooting steps for future reference.
• Availability: Be available on call as per the on-call roster including on weekends to implement planned changes OR resolve production outages. Extend shift if required to resolve production outages.
• Continuous service improvements: Initiate, own and implement service improvements including automation that can improve processes, reduce outages, incidents, make environment more stable, reduce effort required to support, minimize/mitigate risks, improve customer satisfaction etc.

The above responsibilities may be revised as per the business requirement.