1 to 25 of 26 Remote/Hybrid Reinforcement Learning Jobs in London

Director, Model Research & Development

Hiring Organisation
Thomson Reuters
Location
London, UK
Employment Type
Full-time
Hugging Face. Key ResponsibilitiesOwn the hands-on execution of post-training for Thomson's LLMs: supervised fine-tuning, preference optimization (e.g., DPO), and reinforcement learning, including RL in agentic, multi-step settings where models learn to use tools. Stand up and run the online, agentic reinforcement-learning … evaluation teams to keep training and eval pipelines reliable. Bring findings and recommendations forward to inform roadmap and prioritization decisions. Required QualificationsPost-training and reinforcement learning depth. Hands-on command of supervised fine-tuning, preference optimization, and reinforcement learning, including RL in agentic, multi-step settings ...

Senior Machine Learning Engineer - Messaging Platform

Location
Greater London, England, United Kingdom
moment. We’re evolving how messaging works at Spotify — moving from short-term optimization toward systems that understand long-term user journeys. By combining reinforcement learning approaches with deeper domain signals, we’re expanding how machine learning shapes the entire messaging funnel. What You’ll Do Design … build, and ship machine learning models that optimize messaging across push, email, and in-app channels Plan and run A/B experiments in a multi-objective environment, balancing conversion, engagement, retention, and reachability Contribute to reinforcement learning systems that optimize for long-term user outcomes rather ...

Senior Research Scientist | Model Steering

Location
Greater London, England, United Kingdom
deliver perfect translations for the most demanding use cases. To that end, we take responsibility for the entire life cycle of the machine learning models that power our language AI products. This includes data, training, quality assurance, and operational aspects. In our highly collaborative teams, each person … drive impact across the company. Your responsibilities We are looking for a Senior Research Scientist to lead fine-tuning, post-training, model-steerability, and reinforcement learning for the next generation of DeepL's LLM-based translation models. This is a high-impact, hands‐on role for a researcher ...

Senior AI Software Engineer / AI Model Specialist

Location
Greater London, England, United Kingdom
Position Overview We are looking for a highly skilled Senior AI Software Engineer/AI Model Specialist with deep expertise in artificial intelligence, machine learning, and modern software development. The successful candidate will be responsible for designing, developing, training, testing, and optimizing AI models and intelligent software solutions. … with multidisciplinary teams to create innovative products that solve complex business and operational challenges. Key Responsibilities Design, develop, and deploy advanced AI and machine learning solutions. Build, train, validate, and optimize machine learning and deep learning models. Develop Generative AI and Large Language Model (LLM) applications. Create ...

Senior AI Software Engineer / AI Model Specialist

Location
Greater London, England, United Kingdom
Position Overview We are looking for a highly skilled Senior AI Software Engineer/AI Model Specialist with deep expertise in artificial intelligence, machine learning, and modern software development. The successful candidate will be responsible for designing, developing, training, testing, and optimizing AI models and intelligent software solutions. … with multidisciplinary teams to create innovative products that solve complex business and operational challenges. Key Responsibilities Design, develop, and deploy advanced AI and machine learning solutions. Build, train, validate, and optimize machine learning and deep learning models. Develop Generative AI and Large Language Model (LLM) applications. Create ...

Research Engineer, RL Scaling Science

Location
Greater London, England, United Kingdom
engineers, policy experts, and business leaders working together to build beneficial AI systems. About the role Anthropic's RL Scaling Science team studies how reinforcement learning behaves as we scale it (across model size, compute, and task horizon) and turns that understanding into the training recipes behind … appear at scale Partner closely with adjacent RL teams across research and engineering and advance our overall RL stack Strong empirical research skills in Reinforcement Learning, large-scale ML training, or a closely adjacent area Demonstrated ability to own large experiments end-to-end, from design through interpretation ...

Head of Delivery (Public Sector)

Location
Greater London, England, United Kingdom
team. Experience of applying knowledge of cloud computing, including architecting and deploying solutions, and selecting appropriate tools and design patterns. Exposure to advanced machine learning techniques (e.g. reinforcement learning, deep learning). Experience owning the day-to-day resource allocation of a large team of technical … clients and partners within the public sector for successful technical delivery and to build strong long-term relationships Knowledge of data science and machine learning concepts and principles. Expertise in Python and SQL, both for development and to review code. Strong working knowledge of database systems (e.g., SQL, NoSQL ...

AI Application Developer

Location
Greater London, England, United Kingdom
applicable. Last date of application: 30th June 2024 Start Date: 1st August 2024 Key Responsibilities AI Model Development: Design, develop, and train machine learning models using frameworks like TensorFlow, PyTorch, or scikit-learn. Fine-tune and optimize models for performance and scalability. Software Development: Write clean, maintainable, and efficient … communication abilities. Capability to work collaboratively in a team environment. Preferred Skills Experience with natural language processing (NLP) and computer vision techniques. Knowledge of reinforcement learning and deep learning architectures. Familiarity with DevOps practices and continuous integration/continuous deployment (CI/CD) pipelines. Experience in agile ...

Staff Machine Learning Scientist

Location
Greater London, England, United Kingdom
values, we push boundaries, build with speed and intensity, and relentlessly deliver incredible value to our customers. What's the opportunity? Fin's Machine Learning team is responsible for defining new ML features, researching appropriate algorithms and technologies, and rapidly getting first prototypes in our customers’ hands. … move to production fast, often shipping to beta in weeks after a successful offline test. We are very passionate about applying machine learning technology, and have productized everything from classic supervised models, to cutting-edge unsupervised clustering algorithms, to novel applications of transformer neural networks. We test and measure ...

Senior Machine Learning Scientist

Location
Greater London, England, United Kingdom
would like to apply, and the type of support you need to complete the application to adjustments@depop.com.RoleDepop is looking for a Senior Machine Learning Scientist to join our Pricing team in the UK. You will work alongside a cross-functional team of Product Managers, Engineers, Analysts and fellow … Machine Learning Scientists, playing a key role in building the machine learning models that power Depop’s pricing recommendations and our shipping pricing and optimisation strategies.As a senior member of the team, you will be expected to take ownership of high-impact projects, lead technical direction on core ...

Senior Machine Learning Scientist (London)

Location
Greater London, England, United Kingdom
values, we push boundaries, build with speed and intensity, and relentlessly deliver incredible value to our customers. What's the opportunity? Fin's Machine Learning team is responsible for defining new ML features, researching appropriate algorithms and technologies, and rapidly getting first prototypes in our customers’ hands. … move to production fast, often shipping to beta in weeks after a successful offline test. We are very passionate about applying machine learning technology, and have productized everything from classic supervised models, to cutting‐edge unsupervised clustering algorithms, to novel applications of transformer neural networks. We test and measure ...

Staff Machine Learning Scientist

Hiring Organisation
Intercom
Location
London, UK
Employment Type
Full-time
right place. Agentforce is the future of AI, and you are the future of Salesforce. What's the opportunity? Fin's Machine Learning team is responsible for defining new ML features, researching appropriate algorithms and technologies, and rapidly getting first prototypes in our customers' hands. We are an extremely … move to production fast, often shipping to beta in weeks after a successful offline test. We are very passionate about applying machine learning technology, and have productized everything from classic supervised models, to cutting-edge unsupervised clustering algorithms, to novel applications of transformer neural networks. We test and measure ...

Research Engineer, Pretraining

Location
Greater London, England, United Kingdom
Contribute to the entire stack, from low-level optimizations to high-level model design Qualifications: Advanced degree (MS or PhD) in Computer Science, Machine Learning, or a related field Strong software engineering skills with a proven track record of building complex systems Expertise in Python and experience with deep … learning frameworks (PyTorch preferred) Familiarity with large-scale machine learning, particularly in the context of language models Ability to balance research goals with practical engineering constraints Strong problem-solving skills and a results-oriented mindset Excellent communication skills and ability to work in a collaborative environment Care about ...

Senior AI Researcher

Location
Greater London, England, United Kingdom
research in cutting-edge conference proceedings or peer-reviewed journals. Expertise in LLM-related research and methods development. Experience with neural deep learning and machine learning. Expert-level proficiency in Python, Typescript or related languages. Experience in data analysis of large language-based datasets, feature-extractions methods, and prediction … modelling. Experience with reinforcement learning and model fine-tuning (e.g. RLHF/RLAI) Expertise in statistical principles specifically in the context of LLM evaluation and user activity analytics. Proficiency with version control systems (preferably Git) and databases (SQL or NoSQL). Hands-on experience with major cloud platforms ...

Machine Learning Researcher

Location
City Of London, England, United Kingdom
plans, 10% employer pension contributions and an extensive structured professional development programme. Keywords Defence, EM, Electromagnetic, RF, Radio Frequency, AI, Artificial Intelligence, ML, Machine Learning, GNNs, Transformers, Autoencoders, Reinforcement Learning, Multi-Modal AI, Data Fusion, EPM, Electronic Protection Measures, ESM, Electronics Support Measures, EA, Electronics Attack, Python ...

Research Scientist, Personalization

Location
Greater London, England, United Kingdom
helps millions of listeners discover what they love. Within this space, our research team focuses on advancing the state of the art in machine learning and AI to shape the future of personalization. We explore new approaches, challenge existing assumptions, and contribute to the broader research community while influencing … long-term product direction. What You’ll Do Conduct original research in machine learning and AI, with a focus on large-scale foundation models, generative AI, and post-training methods, including reinforcement learning. Develop novel methodologies, models, and evaluation frameworks to advance personalization systems. Design and execute rigorous ...

Research Scientist - Personalization

Location
Greater London, England, United Kingdom
helps millions of listeners discover what they love. Within this space, our research team focuses on advancing the state of the art in machine learning and AI to shape the future of personalization. We explore new approaches, challenge existing assumptions, and contribute to the broader research community while influencing … long-term product direction. What You'll Do Conduct original research in machine learning and AI, with a focus on large-scale foundation models, generative AI, and post-training methods, including reinforcement learning. Develop novel methodologies, models, and evaluation frameworks to advance personalization systems. Design and execute rigorous ...

AI Engineer

Location
City Of London, England, United Kingdom
organization with multiple teams to improve the efficiency of company processes and provide insights and assistance to users. Responsibilities Design, implement, and deploy machine learning models and systems to solve complex problems and drive business outcomes; Research, develop, and implement machine learning algorithms and models for tasks such … implement AI tools such as NLP, LLM, and IA; Collect, preprocess, and curate large datasets required for training generative models; Experiment with different machine learning techniques and algorithms, including supervised, unsupervised, semi-supervised, reinforcement, and deep learning; Design and optimize machine learning pipelines and workflows, incorporating ...

Director, Data Science - Payment Performance Product Data Science London

Location
Greater London, England, United Kingdom
payments scale. The problems range from fraud detection and adaptive risk strategies to authorization optimization, routing and recovery. The common thread is using machine learning to make better decisions on every payment. This is a player-coach role. You will set direction and develop the organization, but remain close … that fit the business problem, rather than defaulting to the most complex approach. Keep the organization current on developments in applied AI and machine learning, and translate relevant advances into production opportunities. What success looks like In your first 12-18 months, you will have: United the Fraud ...

Research Engineer (LLM Performance), London

Hiring Organisation
Isomorphic Labs
Location
London, UK
Employment Type
Full-time
advance human health by building on and beyond the Nobel-winning AlphaFold system. Since then, our interdisciplinary team of drug discovery experts and machine learning specialists has built powerful new predictive and generative AI models that accelerate scientific discovery at digital speed. Our name comes from the belief that … engineers to scale foundational models that will transform the biopharmaceutical world as we know it. You will draw upon your existing engineering experience whilst learning from those around you, to apply novel techniques and ideas to newly encountered model and systems performance optimizations, as well as machine learning ...

Machine Learning Engineer, Driving Product

Location
Greater London, England, United Kingdom
embrace uncertainty, leaning into complex challenges to unlock groundbreaking solutions. We aim high and stay humble in our pursuit of excellence, constantly learning and evolving as we pave the way for a smarter, safer future. At Wayve, your contributions matter. We value diversity, embrace new perspectives, and foster … into clear next steps, and drive improvements through repeated training cycles. About you In order to set you up for success as a Machine Learning Engineer at Wayve, we’re looking for the following skills and experience. Essential Proven experience training deep learning models, with clear ...

System Engineer Campaigns & Programmes London, England, United Kingdom

Location
Greater London, England, United Kingdom
meaningful impact in the world Our work frequently takes us right up to the state of the art in technical innovation, be it reinforcement learning, distributed systems, generative AI, or deployment infrastructure. The defence industry is entering the most exciting phase of the technological development curve. Advances … that you care deeply about What we offer Competitive salary and VSOP options Relocation support : up to €2,500 and 4 weeks temporary accommodation Learning : €500/£450 yearly allowance Health & wellness : gym membership and mental health support (Nilo.health) Social : regularly company events and monthly social allowances Enhanced parental ...

Software Programme Manager UK – Land Campaigns & Programmes London, England, United Kingdom

Location
Greater London, England, United Kingdom
submissions Practical experience applying Agile or hybrid project management methodologies to physical hardware or integrated systems delivery. Exposure to Artificial Intelligence (AI)/Machine Learning technologies, edge computing, or embedded software integration. PMP, APM (PMQ), PRINCE2, or equivalent formal project management accreditation Join Helsing and work with world‐leading … meaningful impact in the world Our work frequently takes us right up to the state of the art in technical innovation, be it reinforcement learning, distributed systems, generative AI, or deployment infrastructure. The defence industry is entering the most exciting phase of the technological development curve. Advances ...

Senior Data Scientist in ADVANCED ANALYTICS

Location
City Of London, England, United Kingdom
opportunity to work at the heart of data science, research and public policy. Advanced Analytics is hiring a Senior Data Scientist to develop machine learning (ML) and Artificial Intelligence (AI) solutions, with a focus on robust prototyping. We have pioneered the application of new analytical approaches in the Bank … England, such as generative AI, machine learning, natural language processing, agent-based models, network analytics, and randomised control trials. We’re looking for someone with ML/AI expertise to help us continue pushing the organisation’s analytical frontier to inform policymaking. DAT is leading the transformation ...

Research Engineer: Generative AI & ML Systems (Hybrid)

Location
Greater London, England, United Kingdom
seeking a Research Engineer to advance AI research and ML systems. The role blends hands-on engineering with rigorous experimentation on large models, reinforcement learning, synthetic data, and multi-agent setups. You will work within a world-leading technology organization, contributing to cutting-edge infrastructure and research initiatives ...