Our client is looking for several Systems Engineers to take technical ownership of complex projects and programmes from scoping through to integration and assurance. This is a client-facing role. You'll set the technical direction, run the worksho...Read More>>.

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>>.

Intec Select is seeking an experienced Lead Software Engineer with expertise in Python and Django for a public sector organization. This hybrid role offers a 12-month contract paying up to £750 per day, located across multiple cities in the UK....Read More>>.

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>>.

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>>.

Anduril Industries is seeking a Staff Product Security engineer to develop novel security tooling and secure our AI-driven defense technologies. You will own security features across embedded and Linux-based platforms and drive threat modelling, r...Read More>>.

Anduril Industries is seeking a Senior Product Security engineer to develop novel security tooling, discover vulnerabilities, and secure our suite of technologies including AI systems, command and control platforms, aerospace vehicles, and long ra...Read More>>.

Hamilton Barnes Associates Limited in London is seeking an ML Research Engineer to join its Innovation & Research team and help develop AI-powered security operations capabilities. The role focuses on building and evaluating AI and agentic systems...Read More>>.

Galliford Try is seeking a Security Design Engineer to join our specialist security team. Based in London/Thames Valley with UK-wide project opportunities, you will lead electronic security design from site visits to final documentation, coordinat...Read More>>.

Leonardo is seeking a Linux Systems Engineer in London for hybrid working (office/remote). You will work at the intersection of Linux internals, networking and security to build secure endpoint solutions for high‑profile clients.You will...Read More>>.

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>>.

Everfox is hiring a Senior Manager Hardware Engineering to lead a 10+ engineers and managers in London, UK. You will own hardware workstreams from concept through industrialization, set technical standards, and partner with software/firmware teams...Read More>>.

Join NXP’s Competence Center for Crypto & Security to shape security architecture across our product portfolio. As a Senior security engineer, you will drive end-to-end analysis, translate regulatory requirements into robust designs, and evaluat...Read More>>.

The Future Starts Here - Shape Security Innovation at NXP! Are you ready to influence the security architecture of technologies that power the world? Join NXP’s Competence Center for Crypto & Security and help define secure so...Read More>>.

Principal/Lead Security Systems Engineer Leonardo – Southampton, England, United Kingdom Your impact Are you a Systems Engineer who loves contributing to the UK’s Defence Industry and making impactful change? Leonar...Read More>>.

Taylor James Resourcing is seeking a Card Payments Specialist to lead the strategy, security, and development of the payment ecosystem across two retail brands and ~800 locations in London. You will own end‑to‑end payment card infrastructure,...Read More>>.

NXP Semiconductors N.V. focuses on secure connectivity and edge processing for embedded applications.The role supports product development teams by specifying, reviewing, and implementing robust system security architectures across lifecycl...Read More>>.

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 with...Read More>>.

TESTQ Technologies Limited is seeking a Senior Technical Lead / Project Lead for an onsite contract role in the United Kingdom. You will lead design and configuration solutions across client projects.Key responsibilities include system/soft...Read More>>.

Amey is seeking an Infrastructure Technician/Engineer to join a high-profile UK Central Government contract in Whitehall, London. You will help maintain a secure Windows environment, support the physical network, and collaborate with senior engine...Read More>>.

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>>.

Refractal is hiring a Systems Engineer to own the services and infrastructure that keep our security platform secure in production. You will work across enforcement runtime, data integrity, tenant isolation, agent tracing, model services and cloud...Read More>>.

Jackson Hogg Ltd is seeking an experienced IT Manager to own the internal technology environment for a growing technology business. You will lead a team of IT professionals, oversee core systems, security controls and end-user technologies to ensu...Read More>>.

GTT is seeking a Systems Engineer to own the administration, maintenance, and optimisation of our infrastructure across Windows and Linux platforms with high availability and security. You’ll troubleshoot complex issues and drive improvements ac...Read More>>.

Airbus Defence and Space Limited in Portsmouth is seeking a Systems Engineer with TEMPEST and EMC experience to join a fast-moving, safety-critical program.You will develop system models, elicit requirements, and define architectures in col...Read More>>.

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>>.

Airbus Defence and Space Limited in Portsmouth is seeking a Systems Engineer with Radiation and Nuclear Hardening experience to work on MOD/SATCOM projects. You will contribute to end-to-end design and validation, ensuring robust performance in ha...Read More>>.

Ultra Intelligence & Communications Cyber (UK) Business in the UK seeks a seasoned Project/Systems Engineer to lead IV&V across hardware, software and firmware, ensuring traceability from requirements to delivery. You will mentor a team of enginee...Read More>>.

Our client is looking for several Systems Engineers to take technical ownership of complex projects and programmes from scoping through to integration and assurance. This is a client-facing role. You'll set the technical direction, run the work...Read More>>.

SiXworks is seeking an Infrastructure Engineer to design and implement secure digital solutions in highly secure environments in Bristol. You will work with Cisco Nexus, NetApp ONTAP, Hyper-V, VMware Cloud Foundation, and HSM/KMS to enable safe, f...Read More>>.

General Dynamics Mission Systems is seeking a Security Engineer (Contractor) to work on a CIS and Cyber project. The role provides security domain expertise, with preference for defence background, PKI implementation, and accreditation experience....Read More>>.

General Dynamics Mission Systems is seeking a Product-Security Engineer to help embed security into complex airborne mission systems. You will own the product-security architecture and define secure-by-design requirements across the programme life...Read More>>.

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>>.

Shield AI is seeking a highly autonomous Staff Systems Administrator to own enterprise IT infrastructure and end-user computing in a security-sensitive entity environment. You will design, implement, secure, and continuously improve on-premises sy...Read More>>.

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual...Read More>>.

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>>.

Senior Systems Engineer - Application SecurityAbout UsAt Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Int...Read More>>.

Barclay Simpson seeks an exceptional hands-on security technologist/architect to shape how the company securely adopts AI and Agentic AI. You will work with architects, developers and engineering teams to secure AI platforms from design through de...Read More>>.

Addition Solutions in the United Kingdom is seeking an operations-focused professional to monitor critical IT infrastructure and ensure systems run securely around the clock. You will support networks, storage, applications and batch processes in...Read More>>.

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>>.

Salary: £32,000 - 72,000 per yearRequirements:Experience as a Systems Engineer in software, networking, digital or cyber securityBackground in a consultancy, large systems integrator or public sector organisat...Read More>>.

The Resourcing Team is recruiting Fence Installers for nationwide utility-site work across the UK. The role requires staying away most weeks and performing steelwork and fence installations to high security standards.Applicants should have...Read More>>.

West Thames College in London is seeking an IT Systems Administrator to oversee operational delivery, administration and support of the college's IT systems and services, ensuring stability, security and high service standards.Working under...Read More>>.

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>>.

Mass Limited, a UK security-focused technology partner, seeks an ICT Systems Engineer to maintain a Windows/VMware environment in a highly secure setting. The role involves multi-hat responsibilities, rapid issue resolution, and ensuring service q...Read More>>.

Spirit IT Solutions is seeking a Network Engineer to design, implement, and support its IT network infrastructure in the Greater London area. You will ensure availability, performance, and security while collaborating with IT and development teams...Read More>>.