Senior Network Administrator (UK)

CHAOS Industries; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Private medical, dental and vision (6)

Relocation assistance

Annual bonuses

Fully stocked kitchen

Free daily lunch on-site

Job summary

Chaos Industries in the United Kingdom is seeking an experienced network professional to own the secure network behind a defence programme, from architecture through day-to-day operations. You will design, deploy and maintain networks across classified and unclassified environments, using Palo Alto firewalls and Aruba switching and wireless gear to ensure uptime and security.

The role requires hands-on expertise with TCP/IP, BGP, OSPF, VLANs and VPNs, plus RMF/NIST 800-53 and STIGs.

Qualifications

• 8+ years in network administration in enterprise or DoD-like environments.
• Hands-on experience with Palo Alto NGFW, Panorama and GlobalProtect.
• Hands-on Aruba switching, wireless, and ClearPass NAC.
• Strong TCP/IP, BGP, OSPF, VLANs and VPNs expertise.
• Experience in classified environments (SIPR/NIPR or equivalent).
• Familiarity with RMF, NIST SP 800-53 and STIGs.
• Active UK SC clearance (DV preferred) or eligibility to obtain SC.

Responsibilities

• Design, deploy and maintain secure networks across classified and unclassified environments.
• Run Palo Alto firewalls and Aruba networking gear.
• Implement segmentation, zero-trust and policy enforcement.
• Monitor performance, troubleshoot complex issues and support incident response.
• Handle vulnerability remediation and system accreditation (ATO).

Skills

Network administration

Palo Alto NGFW

Aruba switching/WLAN

TCP/IP/BGP/OSPF/VLANs/VPNs

RMF/NIST 800-53/STIGs

UK SC clearance / eligibility

Tools

Palo Alto PAN-OS/Panorama

Aruba ClearPass NAC

Aruba switching

Job description

Please note: Active UK SC clearance (DV preferred), or eligibility to obtain SC.

Own the secure network behind a UK defence programme, from architecture through to day-to-day operations.

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.

What you’ll do

• Design, deploy and maintain secure networks across classified and unclassified environments
• Run Palo Alto firewalls (PAN-OS, Panorama, GlobalProtect) and Aruba switching, wireless and ClearPass
• Implement segmentation, zero-trust and policy enforcement
• Monitor performance, troubleshoot complex issues and support incident response
• Handle vulnerability remediation, RMF/STIG compliance and system accreditation (ATO)

You’re a fit if you have

• 8+ years in network administration in enterprise or DoD environments
• Hands‑on Palo Alto experience (NGFW, Panorama, VPNs, threat prevention)
• Hands‑on Aruba experience (switching, wireless, ClearPass NAC)
• Strong TCP/IP, BGP, OSPF, VLANs and VPNs
• Experience in classified environments (SIPR/NIPR or equivalent)
• Familiarity with RMF, NIST 800-53 and STIGs
• Active UK SC clearance (DV preferred), or eligibility to obtain SC

Nice to have

• PCNSE or higher
• Zero Trust / SASE, Zscaler ZIA / ZPA or similar
• High‑availability or mission‑critical systems background
• Defence contractor or rapid‑deployment experience

What you get

• Private medical, dental and vision, 100% paid by the company for you and your dependents
• Pre‑IPO stock options, relocation assistance and annual bonuses (coming soon)
• Fully stocked kitchen
• Free daily lunch when you’re on‑site

The stated compensation range reflects only the targeted base compensation range and excludes additional earnings such as bonus, equity, and benefits. If your compensation requirements fall outside of the range, we still encourage you to apply. The salary range for this role is an estimate based on a range of compensation factors, inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations.

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Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey.Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiringprocess or thereafter. Any information that you do provide will be recorded and maintained in aconfidential file.

As set forth in CHAOS Industries’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection.As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measurethe effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categoriesis as follows:

A \"disabled veteran\" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A \"recently separated veteran\" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An \"active duty wartime or campaign badge veteran\" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An \"Armed forces service medal veteran\" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.