Latest Defence Jobs

Principal Machine Learning Engineer

This role involves leading the design and implementation of scalable, high-impact machine learning systems within complex enterprise and government environments, particularly in the defence sector. The Principal Machine Learning Engineer will act as a technical authority, shaping architectural direction, solving cross-project challenges, and mentoring engineering teams. Work includes strategic innovation, system integration, and hands-on technical leadership in ethical, real-world AI applications.

Faculty London, United Kingdom

Hybrid Permanent

Senior Manager (Safety)

This role involves leading the delivery of AI safety evaluations and red teaming projects, working closely with government and public sector clients. Responsibilities include translating cutting-edge AI safety research into actionable solutions, developing proposals, and mentoring team members in a high-impact, strategic environment.

Faculty London, United Kingdom

Hybrid Permanent Clearance Required

Senior Research Scientist - AI Safety

This role involves leading high-impact AI safety research, focusing on red teaming and evaluations for frontier models in high-risk domains such as cybersecurity and national security. The scientist will drive technical research from concept to publication, shape safety strategies, and support real-world deployment of responsible AI systems through collaboration with government and commercial partners.

Faculty AI London, United Kingdom

Hybrid Permanent Clearance Required

Lead Machine Learning Engineer

Leads the technical direction and delivery of complex machine learning projects, designing scalable and reliable AI systems while guiding architectural decisions and mentoring engineering teams. Focuses on building reusable solutions and driving innovation within regulated environments across financial services and other sectors. Works closely with clients and stakeholders to translate strategic goals into practical, high-impact AI implementations.

Faculty AI London, United Kingdom

Hybrid Permanent

Deployment Lead

Lead end-to-end deployment of a Kubernetes-based AI simulation platform into customer environments, serving as the primary technical liaison with CIOs and CTOs while building and scaling a regional deployment engineering team. Responsibilities include navigating complex security and compliance landscapes, overseeing infrastructure provisioning on cloud and on-prem platforms, enabling smooth platform version upgrades, and ensuring deployment success in regulated industries such as Aerospace, Energy, and Semiconductors.

PhysicsX England

Hybrid Permanent Clearance Required

Staff Backend Software Engineer - GO & Python

Build and maintain a high-performance backend platform for AI-driven, multi-physics simulation used by data and simulation engineers. Work on scalable, observable systems in Python and Go, with ownership from development to production. Collaborate closely with domain experts in engineering and machine learning to enable physics-informed model deployment across aerospace, energy, and advanced manufacturing sectors.

PhysicsX London, United Kingdom

Senior Product Design Manager, Enterprise

Lead and grow a product design team focused on enterprise AI applications, shaping human-AI interaction patterns for high-stakes decision-making environments. Drive design strategy from problem scoping to delivery, ensuring intuitive, research-backed experiences for expert users. Contribute to a shared design system while raising the craft standard across a distributed team.

Scale AI London, United Kingdom

Protection Scientist Engineer, Intelligence and Investigations

Design and build systems to proactively detect and enforce against abuse on OpenAI's products, including monitoring for new and existing features. Investigate critical escalations involving sensitive content and collaborate with product, policy, and engineering teams to develop scalable safety solutions. Develop detection prototypes and improve automation using data science and machine learning techniques.

OpenAI London, United Kingdom

On-site Permanent

Senior Security Engineer (AI Safety), London, Lausanne

This role involves securing AI-first drug discovery platforms by designing risk frameworks, protecting ML model artifacts, and implementing security controls across distributed training and inference systems. The engineer will lead AI-specific incident response, develop guardrails for LLMs and autonomous agents, and ensure compliance with global regulations like the EU AI Act. Close collaboration with ML researchers and platform teams is essential to embed security into the full AI lifecycle while advancing AI safety standards.

Isomorphic Labs United Kingdom

Hybrid Permanent

Professional Services Principal Consulant

Lead strategic SOC modernization and XSIAM deployment initiatives for enterprise customers, transforming fragmented security operations into unified, AI-driven platforms. Architect detection strategies, optimize log ingestion, and guide large-scale transformations from strategy to execution. Mentor cross-functional teams and bridge field insights with product development to enhance platform capabilities.

Palo Alto Networks London, United Kingdom

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

Specialist Software Engineer

This role involves leading high-impact technical projects within Darktrace’s R&D team in Cambridge, focusing on advancing AI-driven cybersecurity solutions. You’ll provide strategic technical direction, mentor engineers, and innovate in detecting and responding to novel cyber threats. The position blends rapid prototyping with structured development, requiring deep expertise in software architecture, security, and distributed systems.

Darktrace United Kingdom

Specialist Software Engineer

This role involves leading high-impact technical projects within Darktrace’s R&D team, focusing on advancing AI-driven cybersecurity solutions to counter novel threats. The engineer will drive innovation through rapid prototyping, mentor team members, and shape strategic technical direction. Collaboration with cross-functional teams and executive communication are key aspects of the position.

Darktrace

Staff+ Software Engineer, Safeguards Infrastructure

Build and maintain foundational systems for AI safety, oversight, and intervention mechanisms, focusing on detecting unwanted model behaviors and preventing misuse. Develop infrastructure for data management, evaluation systems, and tooling for human and agentic review while ensuring high operational reliability at scale. Work closely with cross-functional teams to implement robust, multi-layered defenses in a safety-first AI environment.

Anthropic London, United Kingdom £325,000 – £395,000 pa

Head of International Security

This role leads international security strategy for a frontier AI company, focusing on compliance, cloud security, and AI-specific risks across non-US markets. The person will drive secure-by-default architecture, regulatory alignment, and high-assurance protections for government and enterprise customers. Key responsibilities include cross-border data governance, multi-tenant isolation, and detection engineering tailored to regional requirements.

Scale AI London, United Kingdom

Hybrid Permanent Clearance Required