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Senior Network Administrator (UK)

Chaosindustries · London · posted 2026-11-04
<p></p> <p><strong>Senior Network Administrator (Palo Alto / Aruba)<br>London (On-site) | £70,000 - £85,000 + pre-IPO stock options</strong></p> <p><strong>Please note: Active UK SC clearance (DV preferred), or eligibility to obtain SC.</strong></p> <p><strong>Own the secure network behind a UK defence programme, from architecture through to day-to-day operations.</strong></p> <p>CHAOS Industries is a defense technology company, founded in 2022, that has raised $1 billion from investors including 8VC, Accel and Valor Equity Partners. You’ll own the design, security and uptime of the network that supports critical national security missions.</p> <p><strong>What you’ll do</strong></p> <ul> <li>Design, deploy and maintain secure networks across classified and unclassified environments</li> <li>Run Palo Alto firewalls (PAN-OS, Panorama, GlobalProtect) and Aruba switching, wireless and ClearPass</li> <li>Implement segmentation, zero-trust and policy enforcement</li> <li>Monitor performance, troubleshoot complex issues and support incident response</li> <li>Handle vulnerability remediation, RMF/STIG compliance and system accreditation (ATO)</li> </ul> <p><strong>You’re a fit if you have</strong></p> <ul> <li>8+ years in network administration in enterprise or DoD environments</li> <li>Hands-on Palo Alto experience (NGFW, Panorama, VPNs, threat prevention)</li> <li>Hands-on Aruba experience (switching, wireless, ClearPass NAC)</li> <li>Strong TCP/IP, BGP, OSPF, VLANs and VPNs</li> <li>Experience in classified environments (SIPR/NIPR or equivalent)</li> <li>Familiarity with RMF, NIST 800-53 and STIGs</li> <li>Active UK SC clearance (DV preferred), or eligibility to obtain SC</li> </ul> <p><strong>Nice to have</strong></p> <ul> <li>PCNSE or higher</li> <li>Aruba certifications (ACMP, ACDX, etc.)</li> <li>Network automation (Python, Ansible, APIs)</li> <li>Cloud networking (AWS GovCloud, Azure Government)</li> <li>Zero Trust / SASE, Zscaler ZIA / ZPA or similar</li> <li>High-availability or mission-critical systems background</li> <li>Defence contractor or rapid-deployment experience</li> </ul> <p><strong>What you get</strong></p> <ul> <li>Private medical, dental and vision, 100% paid by the company for you and your dependents</li> <li>5% pension match</li> <li>Pre-IPO stock options, relocation assistance and annual bonuses (coming soon)</li> <li>Fully stocked kitchen</li> <li>Free daily lunch when you’re on-site</li> </ul> <p><strong>Apply now.</strong> It takes just 2 minutes.<strong></strong></p> <p><em>The stated compensation range reflects only the targeted base compensation range and ex

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