Latest National Security Jobs

Network Engineer III - Backbone , London)

This role involves designing, building, and maintaining large-scale, fault-tolerant hybrid cloud networks that support CrowdStrike’s global cybersecurity platform. The engineer will work across multiple cloud providers and on-prem data centers, focusing on IP and optical technologies, automation, and network reliability at massive scale—processing trillions of events daily. The position requires deep expertise in routing protocols, infrastructure-as-code, and AI-driven operational improvements, with a strong emphasis on scalability, security, and innovation.

CrowdStrike London, United Kingdom

Hybrid Permanent Clearance Required

Sr. Software Engineer, Cloud Detection , London)

Design and scale backend services for a next-generation security detection platform processing internet-scale data streams. Focus on building resilient, high-performance systems using distributed technologies to enable real-time threat detection across the Falcon ecosystem. Collaborate across teams to innovate and improve platform architecture and execution.

CrowdStrike London, United Kingdom

Hybrid Permanent Clearance Required

Applied AI Engineer, Government, International

This role involves delivering AI solutions for international public-sector customers, working closely with government agencies and technical teams to implement and scale GenAI applications. Responsibilities include hands-on technical implementation, strategic guidance, and building relationships with stakeholders.

OpenAI London, United Kingdom

Hybrid Permanent

Software Engineer, ChatGPT Infrastructure

Design, build, and operate scalable, reliable infrastructure supporting AI systems like ChatGPT and the OpenAI API. Focus on performance, observability, security, and automation while collaborating with research, product, and engineering teams. Improve developer experience and system resilience at global scale.

OpenAI London, United Kingdom

On-site Permanent

Solutions Consultant - Major Accounts - Industry

This role involves providing technical leadership to major accounts, guiding customers through security transformation by designing and demonstrating cross-platform solutions. The Solutions Consultant will build trusted relationships, lead technical validations, and drive adoption of Palo Alto Networks' cybersecurity portfolio across on-prem, cloud, and security operations. Collaboration with specialist teams and continuous skill development are key to ensuring customer value realization.

Palo Alto Networks London, United Kingdom

Cybersecurity Compliance Analyst

This role involves maintaining information security certifications, developing and enforcing security policies, managing risks and incidents, and providing compliance guidance across the business. You will support continuous improvement activities and customer security assessments, ensuring high standards of security and compliance.

Darktrace

Principal Technical Product Engineer

As a Principal Technical Product Engineer, you will serve as a senior technical leader and strategic customer advocate, bridging strategic customers, Product Management, Engineering, Sales, Customer Success, and Professional Services. You will set technical strategy, influence product roadmaps, and mentor technical professionals while driving innovation and secure adoption of the Cortex platform.

Palo Alto Networks Spain

Threat Research Analyst

The role involves in-depth analysis of cyber threats, malware, and adversary TTPs using data science and analytical techniques. You'll proactively hunt for emerging threats, develop detection methodologies, produce threat intelligence reports, and collaborate with research and product teams. The position emphasizes turning complex data into actionable insights and contributing to public-facing research and conferences.

Darktrace Cambridge, CB2 3BJ, United Kingdom

Software Engineer, Enterprise

Design and scale backend systems for enterprise GenAI products, focusing on reliability, performance, and deployment across hybrid and multi-cloud environments. Build core services and APIs that securely integrate AI models with enterprise data sources. Architect distributed systems for data processing, inference, and orchestration of large-scale AI workloads.

Scale AI London, United Kingdom

On-site Permanent

Senior Software Engineer, Identity

This role involves designing and building secure identity and access management systems for enterprise-scale AI platforms. The engineer will develop authentication and authorization solutions using standards like SSO, MFA, OAuth, and OpenID Connect, and implement fine-grained access controls such as ReBAC and RBAC. The position offers exposure to cutting-edge AI infrastructure and compliance with major security frameworks.

Scale AI London, United Kingdom

Hybrid Permanent

Full-Stack Engineer

Develop and maintain full-stack features across ElevenLabs' AI-powered voice, creative, and API platforms, with end-to-end ownership from scoping to deployment. Work in lean, autonomous teams to build scalable products using Python, TypeScript, and React, integrating cutting-edge AI models. Collaborate across engineering, growth, and sales to solve customer and internal workflow challenges while contributing to infrastructure and large-scale data systems.

ElevenLabs United Kingdom

Remote Permanent

AI Engineer (Frontend)

Design and develop AI-powered user interfaces, translating complex AI functionality into intuitive, accessible, and user-first digital experiences. Collaborate across teams to refine how AI features are presented and interacted with in customer-facing products. Focus on frontend engineering with strong attention to usability, quality, and seamless integration of AI-driven components.

Experis London, United Kingdom £520 – £560 pd

Postdoctoral Research Associate in Machine Learning for Cardiovascular Digital Twins

This role involves developing patient-specific models using machine learning to predict disease states and treatment responses for cardiovascular digital twins. The postholder will work with multimodal clinical, physiological, imaging, and sensor data to enable AI-driven precision treatment.

Queen Mary University of London London, United Kingdom £38 – £51 pa

Contract

Research Assistant in AI

This role involves conducting practical AI research focused on financial forecasting, data modeling, and multi-agent systems within a cross-institutional EPSRC-funded project. The researcher will prepare datasets, implement Python-based forecasting experiments, test AI workflows, and contribute to technical reports and academic publications. Work is conducted in collaboration with leading academics across Newcastle, Southampton, and Imperial College London as part of the SONNETS network.

Newcastle University Newcastle upon Tyne, Northern England, United Kingdom £33 pa

Contract Part-time

Senior Legal Counsel

This role involves providing expert legal advice on complex commercial, procurement, and technology transactions across the UK and internationally, with a focus on technology law, IP, data protection, and cross-border contracts. The Senior Legal Counsel will lead on high-value contracts related to the Ocado Smart Platform, mentor junior team members, and collaborate with internal stakeholders and external counsel. They will also contribute to legal strategy, develop standard templates, and support major corporate projects including M&A and capital markets activity.

Ocado Welwyn Hatfield, United Kingdom