Salary: £60,000 - 90,000 per year Requirements: Active eDV clearance Proven experience as a RHEL System Administrator Strong knowledge of x86 server architecture Familiarity with ITIL-based processes (change, incident, problem management) Experience working within air-gapped or highly secure environments Proficiency in patching, upgrades, and system monitoring Ability to follow and enhance Standard Operating Procedures (SOPs) Desirable skills include 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) Strong attention to detail and thorough documentation Ability to work within strict security and compliance frameworks Excellent communication skills Experience with service management tools (e.g., ServiceNow, BMC Remedy) Responsibilities: Managing and supporting a large x86-based RHEL environment (versions 7/8/9) Ensuring system stability, security, and compliance in a secure, air-gapped environment Following strict change, incident, and problem management protocols Performing system patching, upgrades, and monitoring to maintain optimal performance Contributing to the development and improvement of Standard Operating Procedures (SOPs) Collaborating with a team to uphold high standards of security and operational resilience Technologies: Bash Foreman Support ITIL NFS Python RHEL Security ServiceNow DevOps More: We are a vital, mission-critical program supporting a secure, air-gapped IT environment in South West UK. We are looking for a dedicated Red Hat Infrastructure Support Engineer to join our team on-site, five days per week, for an initial duration of 12 months with likely extensions. If you thrive in challenging environments and have a passion for supporting national defense infrastructure, this is an excellent opportunity for you to contribute to something impactful. last updated 19 week of 2026