Red Hat Infrastructure Support Engineer Location: South West UK (site confidential) - On-site, 5 days per week Duration: 12 months (with lextensions) Clearance: Enhanced DV clearance (active required) Join a vital, mission-critical programme supporting a secure, air-gapped IT environment. Our client is hiring for a dedicated Red Hat Infrastructure Support Engineer to maintain and support a large RHEL estate, ensuring stability, compliance, and security in a high-security setting. What you'll be doing: * Managing and supporting RHEL 7/8/9 systems within a secure, air-gapped environment * Applying patches, upgrades, and monitoring system health to ensure operational resilience * Following strict change, incident, and problem management protocols in line with ITIL standards * Contributing to the stability and security of national defence infrastructure * Documenting procedures and continuously improving operational processes What you'll bring: * Proven experience as a RHEL System Administrator * Strong knowledge of x86 server architecture * Familiarity with ITIL-based processes (change, incident, problem management) * Experience working in air-gapped or highly secure environments * Proficiency in system patching, upgrades, and monitoring * Ability to follow and enhance Standard Operating Procedures (SOPs) * Active eDV clearance Desirable skills: * Experience with Red Hat Satellite, Foreman, or similar lifecycle management tools * Basic scripting skills (Bash, Python) for automation tasks * Knowledge of storage technologies (LVM, NFS, SAN) * Understanding of networking fundamentals (VLANs, DNS, DHCP) Attributes we value: * Attention to detail and thorough documentation skills * Ability to work effectively under strict security and compliance standards * Strong team player with excellent communication skills * Committed to delivering high-quality work aligned with mission-critical objectives This is a fantastic opportunity to contribute to a vital national security project. If you meet the criteria and are ready to support a secure environment, we encourage you to apply today