Machine Learning Jobs

Security Engineer, IAM Stores Security

As a Security Engineer, you will design and build security logging pipelines that process billions of events daily, develop monitoring and detection capabilities for AI/ML workloads, and ensure the security of Amazon's global AWS infrastructure. You will also mentor teammates, write production-ready code, and investigate operational issues to prevent recurrence.

Amazon London, United Kingdom

On-site Permanent

Applied Scientist II, Strategic Account Services (SAS)

This role involves leading the development of sophisticated AI solutions using deep learning, LLMs, and advanced machine learning techniques to enhance seller operations and internal consultancy capabilities. You will define and drive the long-term scientific vision, design advanced ML architectures, and collaborate with engineering teams to deploy AI applications at scale.

Amazon London, United Kingdom

On-site Permanent

Member of Technical Staff, Modeling

As a Member of Technical Staff, you will design and build AI systems, research and implement novel ideas on supercompute infrastructure, and collaborate closely with top researchers. The role offers a unique blend of engineering and research, with a focus on advancing the state of the art in AI.

Cohere London, United Kingdom

Remote Permanent

Data Scientist – Single Cell & Spatial (12-month

As a Data Scientist, you will work on multi-omics data to drive transformative insights into drug discovery. You will develop and implement computational workflows, design statistical models, and collaborate with ML researchers and experimental scientists to identify and validate drug targets. This role offers a unique opportunity to contribute to cutting-edge biotech projects and impact patients' lives.

Relation Therapeutics London, United Kingdom

On-site Permanent

Machine Learning Scientist – Reasoning Systems & RL (LLMs / Agents)

As a Machine Learning Scientist, you will develop advanced AI systems to help scientists reason about complex biological problems. You will focus on building LLM-driven reasoning systems and intelligent agents using reinforcement learning, RLHF, and symbolic reasoning, working closely with computational scientists and biologists to integrate large-scale biomedical data and support target discovery.

Relation Therapeutics London, United Kingdom

On-site Permanent

Senior Data Architect - Finance - London

Senior Data Architect - Finance - LondonA small but growing consultancy is seeking an experienced Senior Data Architect to play a key role in shaping and governing enterprise data architecture across a complex, highly regulated environment.This is a hands-on architecture...

Tenth Revolution Group London, United Kingdom £90,000 – £100,000 pa

Senior Platform Engineer

As the first dedicated Platform Engineer, you will work closely with the founding team to design and deliver a scalable trading platform on Google Cloud Platform. Your role involves building and maintaining infrastructure, optimizing deployment processes, and contributing to backend development using Python and PostgreSQL. This is a hands-on position with significant ownership and influence over the technical direction of the platform and the engineering culture.

Harnham - Data and Analytics Recruitment London, United Kingdom £120,000 – £150,000 pa

Hybrid Permanent

Lead AI Engineer

This role involves designing and implementing AI solutions to improve operational efficiency, defining LLM architecture, and building AI tools like assistants and workflow automation. You will work within an Azure cloud environment, applying best practices in MLOps and DevOps, and collaborate closely with product teams and senior leadership.

Harnham - Data and Analytics Recruitment London, United Kingdom £85,000 – £95,000 pa

Hybrid Permanent

Core Services - Software Engineer (Frontend)

As a Senior Frontend Software Engineer, you will build and evolve a frontend platform that supports complex simulation and ML workflows, including 3D visualizations and data-heavy interfaces. You will design composable frontend architectures, optimize performance, and mentor junior engineers while driving technical standards and best practices.

PhysicsX London, United Kingdom

On-site Permanent

Applied Data Scientist

As an Applied Data Scientist, you will work on complex problems in category management, leveraging advanced data science and machine learning techniques to deliver actionable insights for clients like Tesco. You will collaborate closely with client leadership and team members to build scalable, reusable solutions that drive measurable value and innovation.

dunnhumby London, United Kingdom

Hybrid Permanent Flexible

Senior Applied Data Scientist

As a Senior Applied Data Scientist, you will lead and deliver complex data science projects, applying machine learning and human creativity to solve real-world business problems. You will work closely with the Tesco Personalisation team to develop and deploy scalable personalisation solutions, collaborating with a team of 30+ data scientists.

dunnhumby London, United Kingdom

Hybrid Permanent

Senior Software Security Developer – Core Platform Services

About us PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries....

PhysicsX London, United Kingdom

Applied AI Architect, Industries

As an Applied AI Architect at Anthropic, you will serve as a trusted technical advisor to large enterprises, helping them understand and integrate Claude, Anthropic's AI system, into their technology stack. You will work closely with sales, product, and engineering teams to guide customers through technical discovery, evaluation, and deployment, ensuring alignment with business objectives and maintaining high standards for safety and reliability.

Anthropic London, United Kingdom

On-site Permanent

Research Engineer, Pretraining

This role involves conducting research and implementing solutions in areas like model architecture, algorithms, and data processing for large language models. You will lead small projects, collaborate on larger initiatives, and optimize training infrastructure to ensure AI systems are safe, steerable, and trustworthy.

Anthropic London, United Kingdom

On-site Permanent

Principal Full Stack Engineer & Architecture Lead

This role involves leading the architecture and technical direction of a cloud-native healthcare platform, working closely with senior leadership to drive engineering excellence. Responsibilities include hands-on development, mentoring engineers, and ensuring system scalability and security.

Command Recruitment London, United Kingdom £80,000 – £90,000 pa

Hybrid Permanent