Senior Linux System Administrator - DV Security Cleared

Company IconSalt
Location IconReading

Applicants must hold active and valid Developed Vetting (DV) security clearance to be considered for this opportunity. Unfortunately, applications from candidates without current DV clearance cannot be progressed.An opportu...Read More>>.

Posted: September 23rd, 2026
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Salesforce Systems Manager (Cyber Security Consultancy)

Company IconErnest Gordon Recruitment
Location IconLutterworth

Salesforce Systems Manager (Cyber Security Consultancy)Lutterworth (Hybrid) 2 Days in Office £45,000 - £50,000 + Private Medicare + Life Insurance + Progression + Training + Company Benefit...Read More>>.

Posted: September 23rd, 2026
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Salesforce Systems Trainer (Cyber Security Consultancy)

Company IconErnest Gordon Recruitment
Location IconLutterworth

Job DescriptionSalesforce Systems Trainer (Cyber Security Consultancy)\nLutterworth (Hybrid) 2 Days in Office\n£45,000 - £50,000 + Private Medicare + Life Insurance + Progressio...Read More>>.

Posted: October 3rd, 2026
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Principal Platform Security Architect -Firmware & Operating Systems

Company IconARM
Location IconCambridge

Overview In this role you will strengthen security across platform firmware and embedded Linux systems, spanning BIOS, BMC, and device firmware. You’ll work with firmware and platform teams to design and implement security controls, while...Read More>>.

Posted: October 1st, 2026
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Solution/Systems Architect - Government Secure Sector

Company IconTurner & Townsend
Location IconLondon

Overview In this role you will work on national security accounts as a System Engineer specialist, collaborating with cross‑functional teams to design robust systems and architectures. You must hold the highest UK government clearance. Th...Read More>>.

Posted: October 2nd, 2026
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Staff Product Security Engineer, Embedded & AI Systems

Company IconAndurilindustries
Location IconLondon

Anduril Industries in the United Kingdom seeks a Staff Product Security engineer to develop novel security tooling, conduct architecture reviews, and secure our embedded hardware and software platforms across aerospace and defence technologies....Read More>>.

Posted: October 7th, 2026
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Principal Platform Security Architect -Firmware & Operating Systems

Company IconCamwebdir
Location Icon

Principal Platform Security Architect -Firmware & Operating SystemsJob Overview:We are looking for a Platform Security Architect to support the design and improvement of security mechanisms across platform firmware and embedded Li...Read More>>.

Posted: October 7th, 2026
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Lead Security Architect — Mission-Critical Avionics Systems

Company IconGeneral Dynamics Corporation
Location IconHastings

General Dynamics Mission Systems in the UK leads avionics and communication systems, delivering secure mission computing for aviation and defence. The role focuses on defining secure-by-design requirements and leading security architecture for GCA...Read More>>.

Posted: August 17th, 2026
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Senior Hardware Engineer - Embedded Systems & FPGA Security

Company IconEntrust
Location IconFen Ditton

Entrust in Cambridge is seeking a senior Hardware Engineer to lead sections of hardware design, focusing on quality, reliability and security to meet strict customer and certification needs.The role requires a proven track record on demandi...Read More>>.

Posted: August 17th, 2026
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Tech Strategy Leader — IT, Systems & Cyber Security

Company IconLoc8me
Location IconLoughborough

loc8me seeks a Director of IT, Systems and Security to lead the strategic technology vision, cyber security, and digital infrastructure across the business. You will shape the architecture, enable scalable platforms, and partner with leadership to...Read More>>.

Posted: September 6th, 2026
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Senior IT Security Officer — Highly Classified Systems

Company IconHackajob Ltd
Location IconYeovil

Leonardo UK operates systems and handles information in highly classified environments. As IT Security Officer for highly classified systems, you will act as the main security point of contact for systems and data at SECRET and above, helping ensu...Read More>>.

Posted: September 6th, 2026
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Nuclear IT Systems Engineer - Hybrid, Security & Cloud

Company IconWestinghouse Electric Company
Location IconSalwick

Westinghouse Electric Company in the UK seeks an experienced IT Engineer to maintain, develop, and support the site's IT infrastructure and services that underpin critical manufacturing operations.You will work with Engineering, Operations...Read More>>.

Posted: September 14th, 2026
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IT Systems Engineer: Cloud, Security & Resilience

Company IconInfleqtion
Location IconKidlington

Infleqtion UK is seeking an IT Systems Engineer to manage day-to-day operation, administration and support of our corporate IT environment in Kidlington, Oxford. You will handle cloud and on‑premises systems, identity, networking and infrastruct...Read More>>.

Posted: September 14th, 2026
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Cyber Security Engineer - Cyber & Autonomous Systems Team

Company IconAI Security Institute (AISI)
Location IconLondon

About The AI Security Institute The AI Security Institute is the world's largest and best-funded team dedicated to understanding advanced AI risks and translating that knowledge into action. We’re in the heart of the UK government wi...Read More>>.

Posted: September 20th, 2026
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Hybrid Security Engineer - Defend Critical Trading Systems

Company IconXTX Markets
Location IconLondon

XTX Markets in London is seeking a hands-on Information Security Engineer to join the Security team. You will work with software engineers to identify security flaws, design technical solutions, and help maintain a defensive mindset across our sys...Read More>>.

Posted: September 21st, 2026
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RF Design Team Lead – Defence Systems (UK Security Cleared)

Company IconCirrus Selection Limited
Location IconStevenage

Cirrus Selection Limited in Stevenage is seeking an experienced Team Lead - RF Design to lead RF design packages and guide a technical team within a defence-focused engineering and manufacturing business.You will work alongside the Group Le...Read More>>.

Posted: September 21st, 2026
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Senior Systems Engineer - Cloud & Security Lead (Hybrid)

Company IconEze Castle Integration, Inc.
Location IconLondon

...Read More>>.

Posted: September 22nd, 2026
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OT Systems Lead: Governance, Security & Resilience

Company IconExperis
Location IconPerth

Experis in the UK seeks an OT Technical Systems Manager to lead governance, lifecycle management, and assurance across critical OT platforms. This role focuses on resilience, compliance, and risk-managed operations in regulated environments, coord...Read More>>.

Posted: September 22nd, 2026
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Senior BMS Engineer – Critical Systems & OT Security

Company IconRG Setsquare
Location IconLondon

RG Setsquare is seeking an experienced BMS Engineer to take technical ownership of a prominent London portfolio. You will provide hands-on expertise across BMS platforms, industrial controls, OT networks, integrations, lifecycle engineering and sy...Read More>>.

Posted: September 22nd, 2026
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AI Architecture Lead: Secure, Cost‑Aware AI Systems

Company IconThe Citation Group
Location IconBolton

The Citation Group is seeking an AI Architect to lead AI/Data architecture within the delivery area, reporting to the Chief AI Officer. This role combines hands-on design with governance across products, security, infrastructure and compliance....Read More>>.

Posted: September 22nd, 2026
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Senior Systems Engineer – Defence & Secure Tech

Company IconCopello
Location IconAshmore Green

Copello are partnering with an exciting defence and cyber organisation developing advanced secure systems that protect lives and enable critical missions. We are speaking with Systems Engineers from mid-level through to senior/principal level who...Read More>>.

Posted: September 22nd, 2026
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System Administrator II — Security & Access Control

Company IconM.C. Dean, Inc.
Location IconLondon

M.C. Dean in the United Kingdom is seeking a System Administrator 2 to join the Security and Electronic Systems (SES) unit. You will configure and maintain Physical Access Control, CCTV, PSIM, and other electronic security systems for client sites...Read More>>.

Posted: September 22nd, 2026
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Physical Security Projects Leader: Enterprise Systems Delivery

Company IconQCIC group
Location IconLondon

QCIC group is looking for a Physical Security Technical Project Manager to oversee multiple security projects ensuring client satisfaction and compliance with international standards. The successful candidate will be responsible for the entire pro...Read More>>.

Posted: September 22nd, 2026
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SQL Database & Systems Engineer — Performance & Security

Company IconBreedon Group plc
Location IconEast Midlands

Breedon Group plc seeks a Database & Systems Engineer to administer and optimise SQL Server environments, ensuring data security, availability, and compliance across finance and operational systems at Breedon Head Office in Derbyshire.You w...Read More>>.

Posted: September 22nd, 2026
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Senior Linux System Administrator – DV Security Cleared

Company IconSalt Digital Recruitment
Location IconLondon

Applicants must hold active and valid Developed Vetting (DV) security clearance to be considered for this opportunity. Unfortunately, applications from candidates without current DV clearance cannot be progressed. An opportunity is available fo...Read More>>.

Posted: September 22nd, 2026
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Senior Cloud Systems Engineer — Automation & Security

Company IconDXC Technology
Location Icon

DXC Technology in Gloucestershire is seeking a Senior Cloud Systems Administrator to design, deploy, migrate and manage cloud-based and on‑prem infrastructure. You will work across public and private clouds, virtualization, storage, networks and...Read More>>.

Posted: September 23rd, 2026
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Senior Systems Engineer - National Security (Client-Facing)

Company IconForwardrole
Location IconGloucester

Forwardrole is seeking several Systems Engineers to take technical ownership of complex projects from scoping through to integration and assurance. This is a client-facing role; you'll set the technical direction, run workshops that align stakehol...Read More>>.

Posted: September 24th, 2026
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AI Security Engineer: Design & Defend AI Systems

Company IconJanus Henderson Group
Location IconLondon

Janus Henderson London is seeking a hands-on security engineer to secure AI systems, models, agents, and the platforms beneath them across their full lifecycle. You will define and evolve AI security standards, guardrails, and governance to enable...Read More>>.

Posted: September 26th, 2026
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Senior Systems Engineer, Cyber Security Architecture Lead

Company IconFunplazambsc
Location Icon

Funplazambsc in Bristol is seeking a Senior Systems Engineer to join our architecture team. You will work on secure IT services and systems for MOD-related projects, applying MBSE and requirements management, including DOORS, to refine customer ne...Read More>>.

Posted: September 26th, 2026
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DV Cleared Systems Engineer: Secure Infra & Design

Company IconSynergize Consulting Ltd
Location IconLondon

Synergize Consulting Ltd is seeking a DV Cleared Systems Engineer to join a small, specialist team responsible for design, build, security and documentation of distributed infrastructure.This hands-on and design-oriented role requires a tec...Read More>>.

Posted: September 27th, 2026
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Security Architect Contractor - PKI & Defence Systems

Company IconGeneral Dynamics Missions System International
Location IconWales

General Dynamics Mission Systems is seeking a contractor to deliver security engineering expertise within CIS and Cyber domains. You will collaborate with project teams to develop security artifacts, provide security authority, and guide engineeri...Read More>>.

Posted: September 27th, 2026
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Senior IT & Systems Lead - Secure, Scalable Growth Tech

Company IconJoma Jewellery & Katie Loxton
Location IconBanbury

Joma Jewellery & Katie Loxton is seeking a Senior IT & Systems Manager to lead IT operations, infrastructure and business systems. You will drive secure, reliable tech services and guide architectural decisions, integrations and improvements acros...Read More>>.

Posted: September 29th, 2026
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DV-Cleared Security Engineer for Defence Systems (Hybrid)

Company IconCopello
Location IconColne

Copello is seeking a DV-cleared Security Engineer for a hybrid role in Cambridgeshire. You will join a high-profile secure programme and work with the Security Engineering Lead to implement, maintain and improve critical security controls across D...Read More>>.

Posted: October 3rd, 2026
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Pre-Sales Systems Engineer - Carrier Security & Networking

Company IconPerception Point
Location IconLondon

Systems Engineer – Service Provider – UKIMPORTANT: Candidates must already be based in the UK with full right to work.Join Fortinet, a global cybersecurity le...Read More>>.

Posted: October 3rd, 2026
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Senior Systems Engineer: Application Security & Scale

Company Iconyour Jared
Location IconLondon

Cloudflare is seeking a Senior Systems Engineer - Application Security in London to design and deploy secure, scalable systems. You will work with Go or Rust, and operate alongside a security-focused team responsible for WAF, API Shield and relate...Read More>>.

Posted: October 4th, 2026
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Hybrid Cloud & IT Systems Engineer | Automate & Secure

Company IconCheckatrade
Location IconLondon

Checkatrade, the UK’s leading platform for finding a tradesperson, is hiring an IT Systems and Infrastructure Engineer. You’ll manage hybrid cloud environments, automate workflows, and strengthen security while scaling our infrastructure to su...Read More>>.

Posted: October 4th, 2026
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Senior IT Systems Engineer - Secure VMware & Windows Server

Company IconMass Limited
Location IconCorsham

The MASS facility in the UK requires a seasoned Senior IT Systems Engineer to own third-line incidents and drive continuous improvements across air-gapped on-premise environments.You'll administer Windows Server environments, Active Directo...Read More>>.

Posted: October 5th, 2026
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Electrical Installation & Fire & Security Technician

Company IconSouth Eastern Regional College
Location IconNewtownards

South Eastern Regional College is seeking a Technician in Electrical Installation and Fire and Security for a full-time position in Newtownards. The role involves providing essential technical support to instructors in the Electrical Installation...Read More>>.

Posted: August 7th, 2026
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Security Research Intern: Edge & Cloud Systems

Company IconHP
Location Icon

HP Security Lab in Bristol, United Kingdom, is offering a 6-month Software Security Research Intern position. The internship focuses on researching future security technologies to safeguard devices from the cloud to the edge, delivering value thro...Read More>>.

Posted: August 17th, 2026
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Junior System Installer

Company IconKinexio
Location IconLondon

Kinexio is a leading enterprise software solution for property management, providing the complete suite of tools to improve communication, reduce cost and drive net operating income across property portfolios. Founded in 2012, Kinexio enables r...Read More>>.

Posted: August 24th, 2026
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Linux & Cloud Systems Administrator – Secure Infra (Onsite Reading)

Company IconFree-Work
Location IconReading

CGI is seeking a System Administrator for the BOREALIS team to manage secure cloud infrastructure on-site in Reading. You will monitor health, respond to alerts, and support mission-critical systems in a highly secure environment.The role r...Read More>>.

Posted: October 3rd, 2026
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Security Engineer - Service and Install

Company IconSSR C&T
Location IconSlough

Security Systems Service & Install Engineer Salary: £39,000 - £44,000 + Benefits Location: Slough + Surrounding areas We are seeking an experienced Security Engineer. In this role, you'll be responsible for servicing, mainta...Read More>>.

Posted: October 3rd, 2026
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Salesforce Systems Trainer (Cyber Security Consultancy)

Company IconErnest Gordon Recruitment Limited
Location IconLutterworth

Salesforce Systems Trainer (Cyber Security Consultancy) Lutterworth (Hybrid) 2 Days in Office £45,000 - £50,000 +Private Medicare + Life Insurance + Progression + Training + Company Benefits Are you an a...Read More>>.

Posted: October 3rd, 2026
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IT Systems Administrator — Cloud, Security & Projects

Company IconISH
Location IconCity of Westminster

International Students House (ISH) in London seeks an experienced Systems Administrator to join the IT team. The role involves hands‑on support across IT, Microsoft 365, networking, security and cloud services, working with the IT Manager to kee...Read More>>.

Posted: October 3rd, 2026
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Rail Field Systems Technician — Info & Security

Company IconScotrail
Location IconScotland

ScotRail is seeking a Field Systems Technician to support the maintenance of Customer Information, Security and Retail Systems across Scotland. The role involves planned maintenance, fault response, site surveys and safety audits, and documenting...Read More>>.

Posted: October 3rd, 2026
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Security Alarm & CCTV Install Engineer - Travel UK

Company IconFalconbridge Site Security
Location IconEast Midlands

Falconbridge Site Security is seeking a reliable Wired Alarm & Battery CCTV Installation Engineer to install wired alarm systems, CCTV units, and lighting on construction sites across the UK. You will travel using the company van and complete pape...Read More>>.

Posted: October 4th, 2026
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Hybrid Cyber Security Engineer — Protect & Improve Systems

Company IconSeetec
Location Icon

Seetec is hiring a Cyber Security Engineer to join our IT Services team. Based in the United Kingdom with hybrid or remote working options, this permanent full-time role offers 37 hours per week and a salary of £49,000–£52,500.You will...Read More>>.

Posted: October 5th, 2026
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Senior IT Systems Engineer - Secure Infra, Corsham

Company IconMASS
Location IconHudswell

Mass is a security-focused technology company seeking a Senior IT Systems Engineer for an on-site role in Corsham (SN13). You will manage server infrastructure, AD, and VMware environments, with a focus on reliability and security in a highly prot...Read More>>.

Posted: October 6th, 2026
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Fire & Security Engineer — Service, Install & CCTV (Cornwall)

Company IconBuild Recruitment
Location IconPorth

Build Recruitment is seeking a skilled Fire & Security Engineer to join their team, based from Newquay and covering the surrounding areas in Cornwall. You will service, repair and install fire and security systems, performing preventative maintena...Read More>>.

Posted: October 6th, 2026
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