Latest ai researcher Jobs

Spotlight

ML Runtime Engineer

Design and develop high-performance ML runtime systems for AI accelerators, integrating with open-source frameworks like PyTorch and vLLM. Work closely with hardware and software teams in a co-design environment to optimize inference performance. Build low-level runtime components in Rust and contribute to the full stack of ML inference infrastructure.

Fractile London, United Kingdom

Hybrid Permanent

Lead AI Researcher

The Lead AI Researcher will lead the development and deployment of cutting-edge deep learning systems for high-stakes defence and national security applications. This founding role involves solving ambiguous, mission-critical problems from concept to production, designing advanced AI models, and establishing engineering standards and tooling for a world-class team. Day-to-day work includes close collaboration with leadership to translate operational needs into technical solutions, training and deploying frontier models, and building robust ML infrastructure in a rigorous, security-conscious environment.

Kangal AI London, United Kingdom £100,000 – £200,000 pa

On-site Permanent

Senior Security Engineer (AI Safety), London, Lausanne

This role involves securing AI-driven drug discovery systems by designing risk frameworks, protecting ML model artifacts, and implementing security controls across the AI lifecycle. The engineer will lead incident response for AI-specific threats, safeguard autonomous agentic workflows, and ensure compliance with evolving regulations like the EU AI Act. Close collaboration with ML researchers and platform teams is essential to embed security into high-velocity scientific innovation.

Isomorphic Labs United Kingdom

Hybrid Permanent

Recruiter, AI/ML Research EMEA

This role involves strategic talent acquisition for OpenAI’s AI/ML research teams across EMEA, focusing on identifying and engaging leading researchers and technical scientists. The recruiter will work closely with research staff to shape hiring strategies, anticipate future needs, and influence talent decisions in a fast-evolving technical landscape. Based in London with a hybrid work model, the position requires deep expertise in technical recruiting and strong engagement with global AI research communities.

OpenAI London, United Kingdom

Hybrid Permanent

Unreal Engine Developer - Synthetic Data / AI

Develop and scale Unreal Engine 5 applications to generate high-quality synthetic imagery for training and validating AI and computer vision models. Collaborate with AI researchers, 3D artists, and engineers to automate complex scene generation workflows involving lighting, weather, and camera systems. Transform research prototypes into robust, production-grade software with CI/CD integration and support deployment in secure environments.

MFK Recruitment Brentford, London, TW8 9DE, United Kingdom £55,000 – £70,000 pa

Senior Research Engineer - Data

This role focuses on building and enhancing large-scale data pipelines for AI model training, working with vast video and audio datasets to improve data quality, curation, and annotation. The position bridges applied research and data engineering, collaborating closely with model teams to extract meaningful features and drive performance gains. It emphasizes clean, maintainable code and influence over long-term data infrastructure strategy.

Synthesia London, United Kingdom

Remote Permanent

Software Engineer (Principal level)

This role involves leading backend engineering strategy across a large, distributed team, focusing on system stability, inter-service testing, and monorepo standardization. The engineer will drive long-term technical direction, bridge R&D and product engineering, and work across the full stack from React frontend to Python backend. Projects span multiple teams and quarters, requiring strong decomposition and data-driven iteration.

Synthesia London, United Kingdom

Hybrid Permanent

Senior Software Engineer, RL Post-Training Frameworks

Architect and build scalable reinforcement learning post-training infrastructure that integrates training, inference, and rollout loops across heterogeneous hardware. Work on distributed systems challenges including fault tolerance, elastic scaling, and coordination of actor, critic, and reward models. Contribute to open-source RL frameworks and collaborate with AI researchers, runtime teams, and hardware engineers to optimize performance at scale.

NVIDIA

Remote Permanent

Senior Software Engineer, RL Post-Training Frameworks

Architect and build scalable reinforcement learning post-training infrastructure that supports the full cycle of training, inference, and rollout across heterogeneous hardware. Work on optimizing distributed systems for performance, fault tolerance, and efficient resource utilization, while contributing to open-source RL frameworks and collaborating with AI researchers and hardware teams to shape future capabilities.

NVIDIA Germany

Remote Permanent

AI Security Researcher

This role involves researching emerging AI security threats and developing innovative tools to protect critical national systems. The researcher will conduct vulnerability analysis, reverse engineering, and prototype development while collaborating with multidisciplinary teams to transition research into practical solutions. They will also communicate technical findings to diverse audiences and stay ahead of advancements in AI and cybersecurity.

Forward Role Hampshire, United Kingdom £65,000 – £85,000 pa

Hybrid Permanent Clearance Required

RF Data Scientist / Researcher

This role involves researching and applying modern AI techniques to RF signal data, focusing on signal recognition, identification, localisation, and manipulation. The work combines algorithm development with practical machine learning applications in a sensor-rich environment, requiring strong software engineering practices and collaboration with stakeholders. It is a research-focused position with opportunities for hybrid working and publication.

ECM Selection London, United Kingdom £45,000 – £50,000 pa

Hybrid Permanent Clearance Required

Machine Learning Researcher at leading Market Maker / Hedge Fund

A Machine Learning Researcher will work across trading and engineering teams to extract actionable signals from large-scale market data, applying ML and AI techniques to improve trading performance and operational efficiency. The role emphasizes collaboration, knowledge sharing across asset classes, and developing innovative solutions to real-world trading problems using advanced computational methods.

eFinancialCareers London, United Kingdom £200,000 pa

On-site Permanent

AI Language Engineer II, Alexa for Shopping Lang-Tech

This role involves developing and optimizing AI-driven shopping experiences by authoring and managing system prompts, building LLM-as-a-judge evaluation systems, and automating data workflows. The engineer will work cross-functionally to improve model performance, define tooling requirements through prototyping, and ensure high linguistic and editorial quality across customer-facing applications. A strong focus is placed on retrieval-augmented generation, prompt engineering, and scalable data processing in the context of agentic systems.

Amazon London, United Kingdom

Hybrid Permanent

Graduate AI Research Assistant

This role involves supporting AI research projects by assisting with data collection, algorithm development, and experimental analysis under the guidance of senior researchers. The candidate will contribute to research outputs, including reports and publications, while participating in a structured 3-month training program. It’s a collaborative position focused on building foundational AI research skills in a real-world setting.

Global Tech Recruitment London, United Kingdom £36,000 – £38,000 pa

On-site Permanent

Applied AI Security Architect

This role involves serving as the primary security and compliance expert for Anthropic’s enterprise customers in EMEA, particularly within highly regulated industries. The individual will lead technical discussions on AI security, data protection, and regulatory compliance, supporting pre-sales engagements with institutions like banks and insurers. They will also shape customer trust by designing secure deployment architectures for Claude and influencing product development based on frontline feedback.

Anthropic London, United Kingdom £190,000 – £225,000 pa

On-site Permanent

Applied AI Architect, Industries

This role involves serving as a technical advisor to enterprise customers adopting Claude, designing scalable AI architectures, and guiding integration of Anthropic's LLMs into existing technology stacks. The position bridges technical and business stakeholders, creating evaluation frameworks and delivering tailored technical content. Collaboration with sales, product, and engineering teams is central to driving successful customer deployments.

Anthropic London, United Kingdom £150,000 – £190,000 pa

On-site Permanent