Principal Research Engineer - Process Development

Company IconGKN Aerospace
Location IconBristol

Fantastic challenges. Amazing opportunities.GKN Aerospace is reimagining air travel: going further, faster and greener! Fuelled by great people whose expertise and...Read More>>.

Posted: June 19th, 2026
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RL Research Engineer: Safe, Scalable AI Systems

Company IconAnthropic
Location IconFitzrovia

Anthropic is seeking a Research Engineer specializing in Reinforcement Learning to advance large language model capabilities. This role involves collaborative research and engineering, focused on optimizing core reinforcement learning infrastructure...Read More>>.

Posted: June 27th, 2026
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Research Engineer, Machine Learning (RL Velocity)

Company IconAnthropic
Location IconFitzrovia

About the role The RL Velocity team owns the efficiency and reliability of our RL Science stack - the infrastructure, tooling, and systems that let researchers iterate quickly on training runs. As a Research Engineer on the team, you'l...Read More>>.

Posted: June 27th, 2026
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Research Engineer, Machine Learning (Reinforcement Learning)

Company IconAnthropic
Location IconFitzrovia

About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems that are safe and beneficial for users and society. About the Role As a Research Engineer within Reinforcement Learnin...Read More>>.

Posted: June 27th, 2026
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Applied ML Research Engineer — London On-Site, Equity

Company IconOliver Bernard
Location IconLondon

Oliver Bernard is seeking a Research Engineer in London to bridge research and production in AI, working on cutting-edge technology. The ideal candidate will have a degree in a quantitative field and strong software engineering skills, particularl...Read More>>.

Posted: June 26th, 2026
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Research Engineer / Research Scientist, Finetuning

Company IconAnthropic
Location IconLondon

OverviewYou want to help construct and rapidly iterate on machine learning experiments to help us improve the behavior of powerful AI systems through finetuning. You care about making AI helpful, honest, and harmless, and are intereste...Read More>>.

Posted: June 26th, 2026
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Research Engineer

Company IconHarnham
Location IconLondon

Do you want to build production GenAI systems used daily by legal professionals globally? Are you interested in shipping AI products end to end? Are you excited by complex, high-precision problems where quality tr...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Pretraining

Company IconAnthropic
Location IconLondon

About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed re...Read More>>.

Posted: June 26th, 2026
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Research Engineer / Scientist, Alignment Science - London

Company IconAnthropic
Location IconLondon

Research Engineer / Scientist, Alignment Science, London Join to apply for the Research Engineer / Scientist, Alignment Science, London role at Anthropic About Anthropic Anthropic’s mission is to create...Read More>>.

Posted: June 26th, 2026
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Finetuning Research Engineer for Safe, Aligned LLMs

Company IconAnthropic
Location IconLondon

Anthropic is seeking a Research Scientist or Engineer focused on improving AI systems through innovative finetuning methods. You'll contribute to cutting-edge research, enhancing language models while ensuring they align with human values. This ro...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Human Computer Interfaces

Company IconAnthropic
Location IconLondon

OverviewWe are seeking an innovative Research Engineer to lead the introduction of new interaction modes for Claude, our cutting-edge AI assistant, by combining expertise in Human-Computer Interaction (HCI), Design, and ML Research. Th...Read More>>.

Posted: June 26th, 2026
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Senior Conversational AI Research Engineer — Production

Company IconDecagon
Location IconLondon

A leading AI platform company in Greater London is seeking a Senior Research Engineer to develop and implement cutting-edge conversational AI models. This role involves leading research efforts, building end-to-end systems, and integrating new models...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Pre-Training

Company IconP2P
Location IconLondon

OverviewJump Trading Group is committed to world-class research. We empower exceptional talents in Mathematics, Physics, and Computer Science to seek scientific boundaries, push through them, and apply cutting-edge research to global f...Read More>>.

Posted: June 26th, 2026
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Research Engineer – Large-Scale Pretraining & Systems

Company IconAnthropic
Location IconLondon

A leading AI research firm in London is looking for a Research Engineer to join their ML Performance and Scaling team. The candidate will manage critical aspects of the pretraining pipeline and must have extensive experience with large language model...Read More>>.

Posted: June 26th, 2026
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Research Engineer: Scalable Production ML Systems

Company IconAnthropic
Location IconLondon

Anthropic is seeking a Research Engineer for their ML Performance and Scaling team in London. This high-impact role focuses on training advanced AI models, performance optimization, and solving complex issues in production systems. The ideal candidat...Read More>>.

Posted: June 26th, 2026
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Senior Research Engineer

Company IconDecagon AI, Inc.
Location IconLondon

About Decagon Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences. Our technology enables industry-defining enterprises like Avis Budget Group, Block’s Cash App an...Read More>>.

Posted: June 26th, 2026
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Senior Conversational AI Research Engineer

Company IconDecagon AI, Inc.
Location IconLondon

An innovative AI technology company in Greater London is seeking a Senior Research Engineer. This role involves building industry-leading conversational AI models and taking them from idea to production. The position requires strong engineering skill...Read More>>.

Posted: June 26th, 2026
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ML/Quant Research Engineer — Production Systems (London)

Company IconDex
Location IconLondon

Dex is seeking a ML / Quant Research Engineer in London, working five days a week in-office. You will apply machine learning and statistical methods to financial data, including building and deploying production ML systems. Ideal candidates have a st...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Pretraining Scaling - London

Company IconAnthropic
Location IconLondon

About AnthropicAnthropics mission is to create reliable interpretable and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers...Read More>>.

Posted: June 26th, 2026
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Senior Research Engineer - Production Conversational AI

Company IconDecagon
Location IconLondon

A leading AI technology company in Greater London is seeking a Senior Research Engineer to build industry-leading conversational AI models. The role includes owning multi-quarter initiatives and partnering with engineers on production systems. Ideal...Read More>>.

Posted: June 26th, 2026
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Senior Research Engineer

Company IconDecagon
Location IconLondon

About Decagon Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences. Our technology enables industry‑defining enterprises like Avis Budget Group, Block’s Cash App and Squ...Read More>>.

Posted: June 26th, 2026
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HCI Research Engineer: AI Interaction & Prototyping

Company IconAnthropic
Location IconLondon

Anthropic is seeking a Research Engineer to innovate interaction modes for Claude, their AI assistant. This role emphasizes collaboration across design and research teams to enhance user experiences.You will utilize your front-end engineeri...Read More>>.

Posted: June 26th, 2026
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Research Engineer

Company IconAnsatz Capital
Location IconLondon

We are looking for aresearch engineerto research, test, and deploy new trading strategies, as well as to design and build research infrastructure to test trading ideas. Candidates focusing on strategy development should be strong...Read More>>.

Posted: June 26th, 2026
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Lead Research Engineer

Company IconThomson Reuters
Location IconLondon

Do you love creating innovative solutions for customers? Then come and apply your skills and passion for technology at Thomson Reuters Labs. We are seeking a Lead Research Engineer who will bring expertise in AI and ML and is interested in buil...Read More>>.

Posted: June 26th, 2026
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Machine Learning Research Engineer (Foundational Research)

Company IconThomson Reuters
Location IconLondon

Join a cutting‑edge research team working to deliver on the transformation promises of modern AI. We are seeking Machine Learning Research Engineers with the skills and drive to build and conduct experiments with advanced AI systems in an aca...Read More>>.

Posted: June 26th, 2026
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LLM Research Engineer – Foundational AI & Data Pipelines

Company IconThomson Reuters
Location IconLondon

A global information provider is seeking a Machine Learning Research Engineer to join their innovative team. This role involves designing robust systems for training and evaluating large language models as well as collaborating with world-class resea...Read More>>.

Posted: June 26th, 2026
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Quant Research Engineer - Build & Test Trading Strategies

Company IconAnsatz Capital
Location IconLondon

A financial trading firm in Greater London seeks a research engineer to develop and test trading strategies using Python. The ideal candidate will contribute to building research infrastructure, explore novel market ideas, and collaborate with teamma...Read More>>.

Posted: June 26th, 2026
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Senior Research Engineer (LLM Post-Training £300k)

Company IconDex
Location IconLondon

Location: London, 5 days in officeSalary: Up to £300,000 + EquityThe roleSenior research engineer experienced in post‑training large language models, with a focus on scaling, RLHF, DPO, reward modelling,...Read More>>.

Posted: June 26th, 2026
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Lead AI Research Engineer — Scalable ML & Impact

Company IconThomson Reuters
Location IconLondon

Thomson Reuters is hiring a Lead Research Engineer to innovate solutions using AI and ML. This role involves developing scalable ML systems and collaborating with cross-functional teams.The ideal candidate will have over 8 years of experien...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Pretraining — Lead Scalable LLM Training

Company IconAnthropic
Location IconLondon

Anthropic is seeking a researcher to advance AI systems focused on model architecture and algorithms. The ideal candidate will hold an advanced degree in a relevant field and possess strong software engineering skills. Responsibilities include conduc...Read More>>.

Posted: June 26th, 2026
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Research Engineer - Start-up - London

Company IconOliver Bernard
Location IconLondon

Research Engineer | London (5 Days On-Site) | Up to £150,000 + Equity I'm currently working with a well-funded, high-growth AI company that is building cutting-edge technology at the intersection of machine learning, large-scal...Read More>>.

Posted: June 26th, 2026
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Quant Research Engineer — Power Cutting-Edge Research Tools

Company IconNumeus
Location IconLondon

A diversified digital asset investment firm seeks an experienced Quantitative Research Engineer to enhance research efficiency. The role demands 4+ years of experience in developing alpha strategies, a master's or Ph.D. in a relevant field, and exper...Read More>>.

Posted: June 26th, 2026
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AI Research Engineer for Drug Design

Company IconIsomorphic Labs
Location IconLondon

RequirementsPhD in technical subject with major engineering component and exposure to AI/ML, or BSc, MSc and 2+ years of specific experience working on ML model development:,Strong general engineering experience, as evide...Read More>>.

Posted: June 26th, 2026
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Reinforcement Learning Research Engineer: Scalable, Safe AI

Company IconAlcides Fonseca
Location IconLondon

A public benefit corporation in London is looking for a Research Engineer to advance reinforcement learning AI capabilities. This role demands collaboration with diverse teams and involves both research and engineering at the forefront of AI developm...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Machine Learning – Paris/London/Zurich/Warsaw

Company IconNLP PEOPLE
Location IconLondon

About Mistral At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through hi...Read More>>.

Posted: June 26th, 2026
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Research Engineer: ML for Life Sciences & Protein Design

Company IconInstaDeep
Location IconLondon

InstaDeep is looking for Research Engineers to join our Research Team in London, working at the intersection of machine learning and life sciences. Our in-house Research Team aims to build foundational expertise and develops the next-generation...Read More>>.

Posted: June 26th, 2026
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Senior ML Research Engineer - Scale Pipelines & Prototypes

Company IconNLP PEOPLE
Location IconLondon

A forward-thinking AI company is looking for a Research Engineer in Greater London. The role involves supporting researchers with large-scale ML pipelines, integrating cutting-edge research with production, and designing ML algorithms in Python. Cand...Read More>>.

Posted: June 26th, 2026
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Research Engineer - Machine Learning (Contractor)

Company IconHuawei Technologies Research & Development (UK) Ltd
Location IconLondon

About Huawei Research and Development UK Limited Founded in 1987, Huawei is a leading global provider of information and communications technology (ICT) infrastructure and smart devices. We have 207,000 employees and operate in over 17...Read More>>.

Posted: June 26th, 2026
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Senior Speech AI Research Engineer (Audio & Generative)

Company IconmicroTECH Global LTD
Location IconEgham

A technology company in the United Kingdom is seeking a Senior Machine Learning Research Engineer specializing in Speech, Audio, and Generative AI. The ideal candidate will have a strong background in machine learning, audio processing, and software...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Machine Learning and Computational Biology

Company IconInstaDeep
Location IconLondon

InstaDeep is looking for Research Engineers to join our Research Team in London, working at the intersection of machine learning and life sciences. Our in-house Research Team aims to build foundational expertise and develops the next-generation...Read More>>.

Posted: June 26th, 2026
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Quantitative Research Engineer

Company IconNumeus
Location IconLondon

Numeus is a diversified digital asset investment firm built to the highest institutional standards, combining synergistic businesses across Alpha Strategies, Trading, and Asset Management. Numeus was founded by successful executives with...Read More>>.

Posted: June 26th, 2026
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Machine Learning Research Engineer

Company IconIsomorphic Labs
Location IconLondon

RequirementsPhD in technical subject with major engineering component and exposure to AI/ML, or BSc, MSc and 2+ years of specific experience working on ML model development:,Strong general engineering experience, as evide...Read More>>.

Posted: June 26th, 2026
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Research Engineer, Machine Learning (Reinforcement Learning) London, UK

Company IconAlcides Fonseca
Location IconLondon

London, UK About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group...Read More>>.

Posted: June 26th, 2026
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Research Engineer, ML — Advancing RL & AI for Science

Company IconHuawei Technologies Research & Development (UK) Ltd
Location IconLondon

A leading tech research organization in Greater London is seeking a skilled Machine Learning Engineer to join their Reinforcement Learning Team. This role focuses on advancing AI through original research and developing cutting-edge algorithms that c...Read More>>.

Posted: June 26th, 2026
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Senior ML Research Engineer - Artificial Intelligence

Company IconBloomberg
Location IconLondon

Senior ML Research Engineer - Artificial Intelligence Location London Business Area Engineering and CTO Ref # 10051918 **Description & Requirements** Bloombergu2019s Engineering AI...Read More>>.

Posted: June 8th, 2026
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Research Engineer - Hybrid - Gloucester, UK

Company IconEDF
Location IconGloucester

Research Engineer - Gloucester, UKAbout the RoleReady to apply your expertise in nuclear fuel or material science to help shape the safety and performance of the UKs nuclear fleet? Looking to work on complex, high-impact...Read More>>.

Posted: June 9th, 2026
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Research Technician - London

Company IconImperial College London
Location IconLondon

Research TechnicianJob Type: Full-Time.Starting Salary: 41005 - 45616 per annum + 41005 plus benefitsTo find out more about the job please click the apply for job butto...Read More>>.

Posted: June 20th, 2026
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Principal Research Engineer - Systems Engineering

Company IconGKN Aerospace
Location IconBristol

Fantastic challenges. Amazing opportunities.GKN Aerospace is reimagining air travel: going further, faster and greener! Fuelled by great people whose expertise and...Read More>>.

Posted: June 18th, 2026
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Principal Research Engineer

Company IconIO Associates
Location IconBristol

Principal Research EngineerDistributed Systems & Industrial AIBristol (Hybrid) | PermanentAn advanced technology and research organisation is seeking a Principal Research Engineer / Research Fellow to help shape next...Read More>>.

Posted: June 25th, 2026
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Senior Research Engineer - Process Development

Company IconGKN Aerospace
Location Icon

Company description:Fantastic challenges. Amazing opportunities.GKN Aerospace is reimagining air travel: going further, faster and greener! Fuelled by great people whose expertise and creativity sets the standards in...Read More>>.

Posted: June 26th, 2026
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