Cyber Security Jobs

165 jobs for “Defence”

Results

Cyber Security - eDV Required

2 weeks ago

QinetiQ Malvern, England, United Kingdom

Join a team delivering offensive security solutions in real-time operational mission environments, planning and executing advanced red team engagements that simulate real-world attacks. The role involves exploiting vulnerabilities across infrastructure, applications and cloud platforms, bypassing defences such as firewalls, EDRs and IDS/IPS, and developing realistic adversary TTPs. Work is fully on-site at the Malvern facility, focused on defence and national security.

On-site Clearance Required

Senior Security Architect

Last month

QinetiQ Malvern, England, United Kingdom £69,975 – £77,750 pa

Deliver cyber security consultancy by leading the design and development of secure technical system and solution architectures across a range of technologies and environments. Work in partnership with clients to drive security outcomes, develop security plans, policies and processes, and advise on security-related technology selection. Collaborate with other architect disciplines, mentor staff, and shape security architectural solutions that meet governance and regulatory requirements.

Hybrid Clearance Required

Security Architect - Consultant / Senior Consultant

Last month

Harrington Boyd London £52,000 – £74,000 pa

Designs and shapes security solutions across complex technology transformation programmes for public and private sector clients, translating business and security requirements into practical architectures and technical designs. Covers cloud, infrastructure, networks, applications and enterprise security, with threat modelling and Secure by Design applied throughout the lifecycle. Works directly with clients, solution architects and engineers rather than focusing on governance or BAU security.

Hybrid Permanent Clearance Required

Principal OT Cybersecurity Consultant

2 weeks ago

NRL Recruitment Reading £60 – £70 ph

Lead the design and implementation of secure OT/ICS cybersecurity architectures, conduct risk assessments and assurance activities, and apply frameworks such as IEC 62443, NCSC CAF, NIS Regulations and ONR SAPs. Provide technical leadership across critical national infrastructure, nuclear and defence programmes, engaging senior stakeholders and regulatory bodies, with some bid and client relationship work.

Hybrid Contract Clearance Required

Security Architect

Last month

Copello Gloucester £90 – £110 ph

Lead security architecture across cloud, hybrid and on-premise environments, embedding Secure by Design principles through the full technology lifecycle. The role covers threat modelling, security assurance, risk assessment and architecture governance, with technical leadership across IAM, IaC, container platforms and secure cloud migration. Requires active eDV clearance and works on a hybrid basis.

Hybrid Contract Clearance Required

Security Incident Management Analyst x 3

Last month

CBSbutler Holdings Limited trading as CBSbutler Preston £450 – £500 pd

Governance and coordination role tracking security incidents across a complex multi-supplier SIAM environment, from identification through to closure. You coordinate updates between suppliers and security stakeholders, monitor SLAs and escalation trends, and produce incident reports, dashboards and audit-ready records. Distinct from a hands-on SOC position, with no threat hunting or technical remediation involved.

On-site Contract Clearance Required

Security Operations Specialist ( L3 )

3 weeks ago

Michael Page Liverpool £60,000 – £65,000 pa

Investigating and responding to escalated security incidents, performing detailed event analysis and threat detection while working with external security providers. Acts as a subject matter expert supporting cyber incident response, optimising SIEM, IAM and DLP platforms, running phishing simulations and security reviews across the technology estate.

Hybrid Contract

Security Operations Implementation Consultant

3 weeks ago

Exceed Cyber limited London £800 – £900 pd

Translate high-level SecOps transition strategies into detailed, low-level implementation plans across security engineering, threat and vulnerability management and security testing. Define operational readiness criteria, phase-gate checklists and multi-year delivery roadmaps, coordinating dependencies with architecture, GRC and technical SMEs. Requires active SC clearance and UK Government or regulated-environment experience.

Hybrid Contract Clearance Required

Ground System Security Design Engineer

2 months ago

Airbus Chippenham

Provide end-to-end cyber security support for Spacecraft Control Centre Systems and Satellite Communications infrastructures, analysing functional needs, setting criticality levels and proposing protection concepts. Coordinate security architecture across disciplines, manage risks and ensure defences stay ahead of evolving threats. Requires CISSP/CISM and hands-on knowledge of Solaris, Linux, Windows, Cisco and JSP440.

Hybrid Permanent Clearance Required

Senior Machine Learning Researcher

2 weeks ago

Darktrace Cambridge

Conducts independent and collaborative research into large language models, statistical methods and classical machine learning, prototyping ideas and implementing models into the wider software stack. Produces latency- and memory-optimised solutions for deployment on edge devices, working closely with software engineers and security analysts.

Hybrid

Senior SOC Engineer

Yesterday

Sopra Steria Farnborough £70,000 – £80,000 pa

Hands-on detection engineering role designing, testing and deploying detection content across Microsoft Sentinel and Splunk, writing KQL and SPL logic, tuning alerts to cut false positives and onboarding log sources from cloud, identity and network telemetry. Works closely with SOC, Threat Intelligence and Security Architecture teams in a live SOC environment.

Hybrid Permanent Clearance Required

Machine Learning Researcher

3 months ago

Darktrace Cambridge

Explore and prototype machine learning solutions across domains, using language models, neural networks, statistical methods and classical ML, then implement models into the wider software stack. Work independently and with software engineers and security analysts, optimising models for latency and memory on edge devices. Hybrid role with two compulsory days a week in the Cambridge office.

Hybrid

Cloud Architect

3 weeks ago

Copello West Byfleet

Hands-on architecture role shaping AWS cloud strategies, standards and governance for secure, business-critical environments. You will design resilient, highly available solutions, lead infrastructure automation and migration projects, and provide technical leadership to engineering teams while engaging directly with customers. Distinct for its focus on Defence, National Security and Public Sector work requiring existing DV clearance.

Clearance Required

Information & Cybersecurity Assurance Manager

Last month

Nexithon Ltd Guildford

Owns cybersecurity and information assurance workstreams, including certification assurance for ISO 27001, CE+ and DCC, Secure by Design reviews of infrastructure, cloud and application designs, and coordination of ITHCs, penetration testing and vulnerability remediation. Also manages supplier security compliance, Security Aspect Letters, spacecraft space licensing security, project security budgets and incident response duties within a defence programme context.

Clearance Required

Senior Cyber Security Engineer

Yesterday

Appcast Enterprise Farnborough

Lead protective and information security engineering on a critical MOD programme, shaping secure designs, assuring controls, and managing vulnerabilities across infrastructure, endpoints, identity and AWS cloud. Combines hands-on hardening, incident response leadership and ST&V with governance, reporting and mentoring, working largely autonomously on-site in Farnborough with some remote work.

Hybrid Permanent Clearance Required

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