Senior Linux Infrastructure Operations Engineer

This role is responsible for managing and optimizing the company's Linux environments, primarily RHEL and Oracle Linux. It focuses on core activities such as server administration, security, and performance, with an emphasis on supporting production of Linux infrastructure.

The selected candidate will work with the Engineering team to drive architecture and design improvements. Several of the responsibilities outlined below reflect the organization's target-state vision, which the successful candidate will help define and implement.

This role requires attendance in the office two days per week, with additional presence in Bristol as needed to support operational requirements.

• 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 Service Now 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…