Infrastructure Engineer, Cyber Tooling (Linux, Proxy, Virtualisation) for NATO with security clearance

• Installing, configuring and patching the Linux servers behind the platform, and managing accounts, permissions and security settings
• Configuring the network services it depends on, and keeping the proxy and access rules correct
• Reviewing logs and alerts before they become outages, verifying system health daily, and acting on tickets, changes and incidents
• Reporting on system health, monitoring activity and compliance - audit logs, performance, capacity trends
• Keeping the documentation and the inventory of integrated sources and tools genuinely current
• Testing backup restores, resolving performance bottlenecks, and automating away the manual work
• Acting as the subject-matter expert for the tool itself, through its whole lifecycle

• A computer science or IT degree, or equivalent experience instead of one
• Several years in IT security with a focus on system administration and security tool management in a large organisation
• Strong Linux administration, Docker container management, and confident scripting in Python, shell or PowerShell
• IP switching, routing and network troubleshooting; virtual infrastructure on VMware
• Log analysis as a diagnostic skill - you spot the abnormal, not just the broken
• Welcome extras: service management and monitoring tooling, configuration automation such as Ansible, ITIL, and certification such as CISSP, CISM or CISA

It is a single, clearly owned platform in a serious security environment, with no travel attached, and it runs from a standing framework rather than a one-off project.