Cyber Security Jobs

eFinancialCareers · Belfast

Operational role running penetration tests, vulnerability assessments and Red Team adversarial evaluations across a global bank's application portfolio. The work is twofold: testing GenAI, agentic and LLM-backed systems for prompt injection, retrieval poisoning and tool misuse, and using AI tooling to speed up security testing. Involves building triage pipelines and containment architectures for AI agents at enterprise scale.

Appcast Enterprise · Farnborough

Protects a critical defence IT application and infrastructure by running vulnerability scans, managing endpoint security, responding to incidents and hardening systems. Works with frameworks such as Government Functional Standard 007 and standards like CIS, STIG and NIST, leading security implementation and assurance on a major UK government programme.

eFinancialCareers · London

Own and lead the end-to-end Threat Intelligence Platform, driving strategic design, delivery and development to maximise value across a global cyber defense organisation. Build API integrations and connectors across commercial intelligence sources, govern intelligence standards such as source reliability, confidence scoring and TLP handling, and mentor junior analysts while producing intelligence for technical and executive audiences.

Adria Solutions · Manchester · £55,000 – £75,000 pa

Design, build and maintain CI/CD pipelines in Azure DevOps, automating build, test and deployment processes. Manage Azure infrastructure with Terraform, Bicep or ARM templates, support App Services and Function Apps, and embed security and monitoring tooling such as SonarCloud, Snyk and Azure Monitor. Works closely with developers in a collaborative, flexible team.

Thomas Search · Tidworth

Lead organisation-wide IT security for a large PFI support services contract, owning the security strategy, roadmap and compliance activities. Manage incidents, breaches, disaster recovery and business continuity, and extend controls across the supply chain. The role sits in the central business services function, working with cyber and quality teams on audit readiness and business change.

Amtis Professional · Chester · £50,000 – £55,000 pa

Hands-on role strengthening an organisation's ability to respond to, recover from and learn from cyber incidents. Combines practical system recovery and resilience testing with maintaining Business Continuity, Incident Response and Cyber Recovery plans, plus stakeholder coordination across IT and the wider business.

Amtis Professional · Deeside · £45,000 – £55,000 pa

Hands-on role strengthening an organisation's ability to respond to, recover from and learn from cyber incidents. Combines practical system recovery and resilience testing with Business Continuity, Incident Response and Cyber Recovery planning, working with technical and non-technical stakeholders across IT and the wider business.

Deloitte · Glasgow

Supports Deloitte Global's AI Governance, Confidentiality and Privacy team, leading governance frameworks, policies and training while acting as a global AI use case reviewer advising on trustworthy AI. Involves translating strategy and emerging regulation into delivery roadmaps, monitoring AI regulatory developments, and building relationships across legal, technology, data science and business teams. Requires strong project management, stakeholder engagement and change management capability.

Appcast Enterprise · Whiteley · £61,500 – £78,800 pa

Designs, develops and maintains manual and automated test scripts and reporting for a flagship National Security programme, using frameworks such as Katalon Studio, Selenium, SoapUI and JUnit. Analyses requirements and designs to build risk-based test approaches, working within hybrid Waterfall and Agile scrum teams alongside software and systems engineers.

Appcast Enterprise · Huntingdon

Provide cybersecurity engineering for classified and unclassified networks, hardening systems against baseline requirements, forwarding logs to SIEM, assessing vulnerabilities and implementing risk mitigation. Work with Trellix, Ivanti, ClearSwift and Yubikey, plus IAM, Kubernetes and secure coding practices, in a team supporting MOD customer sites.

eFinancialCareers · London

Hands-on technical lead role designing, automating and supporting low-latency trading infrastructure and business-critical financial systems across cloud and on-prem. You will build CI/CD pipelines for Java and Python apps, use Terraform, Chef or Ansible for infrastructure as code, run Kubernetes and AWS, and mentor engineers while driving observability, reliability and AI-enabled operational tooling.

eFinancialCareers · London · £45,000 – £70,000 pa

Designs, builds and manages secure AWS cloud architectures for UK government and defence clients, deploying infrastructure with Terraform, CloudFormation or CDK and handling networking, Kubernetes/ECS/OpenShift orchestration and security best practice. Senior contributors also liaise with stakeholders, create implementation patterns and lead teams within a DV-cleared environment.

Entrust · United Kingdom - Field

Leads the R&D organisation building the Entrust Agentic Trust platform, translating a four-plane reference architecture into development strategy, operating model and roadmap. Accountable for engineering execution, quality, security and delivery predictability across cloud-native services, APIs, SDKs, policy and authorization components, and tamper-evident evidence systems. Partners with Product, Architecture, Security and Cloud Operations, and builds a multi-discipline software organisation.

Entrust · United Kingdom - Field

Senior individual contributor providing cross-team technical leadership for quality engineering across a multi-tenant SaaS platform. Defines automation architecture and risk-based quality strategies, builds reusable test frameworks, and embeds unit, integration, contract, API and end-to-end testing into CI/CD pipelines. Leads performance, scalability and resilience validation, including fault injection and chaos testing, while mentoring engineers and influencing release decisions.

Mimecast · London · £80,000 – £120,000 pa

Hands-on engineering role embedded in the Incydr product team, working directly with customers on technical health checks, custom integrations and troubleshooting. You get full access to the codebase and deployment tooling to diagnose and ship fixes, using AI coding tools to build purpose-built scripts and integrations. Expect some travel to customer sites, with most engagement remote under a hybrid model.