26 to 50 of 152 Research Engineer Jobs in London

RL Research Engineer

Location
Greater London, England, United Kingdom
systems that improve other AI systems. Our mission is to accelerate machine learning development using machine learning itself. Our work spans fundamental reinforcement learning research, large-scale experimentation, and product development. Our current products are the first applications of this research programme: Paramorph — a foundation model, trained with … expanding the team to accelerate development and commercialisation of our technology platform. About the Role We are looking for an exceptional Reinforcement Learning Research Engineer to join our research team. You will play a central role in developing Paramorph and the next generation of reinforcement learning technologies ...

Research Engineer

Location
Greater London, England, United Kingdom
# Research EngineerElevenlabsSalary not statedFull-timeremote· midBulgaria, Germany, Poland, UK, USAListed via Jobicy · posted 24 Sept 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionAbout ElevenLabsElevenLabs is an AI research and product company transforming how we interact with technology.We launched in January 2023 with the first … located near one of our main hubs, we offer a monthly co-working stipend.About the roleWe are looking for a Research Engineer to join the research team at ElevenLabs. You'll work at the frontier of audio AI, shaping the models behind products used by millions ...

Research Engineer

Location
Greater London, England, United Kingdom
have raised $60M in Series C funding from Wellington Management, CRV, Next47 and Y Combinator. The role We're looking for a Research Engineer to join Encord's ML team. You'll work on robotics, computer vision and multimodal research in data curation, annotation, evaluation and quality … control, with successful work going into the core product. We face a variety of interesting research problems across the full data life-cycle, including annotation, quality control, verification and curation. We are looking to strengthen our team to build upon and extend our market-leading platform. The kind ...

Applied Research Engineer

Location
Greater London, England, United Kingdom
Applied Research Engineer, you'll bridge research and production, designing, evaluating, and shipping models and retrieval systems that reason over complex financial information with provenance and explainability built in. What you’ll work on LLM and retrieval pipelines that reason over private-market data Rigorous evals … benchmarks that keep quality measurable Accuracy, grounding, and explainability improvements Shipping research into the product alongside engineering What we’re looking for Hands-on experience with modern ML and LLM systems A bias toward measurable results over hype A strong focus on correctness, evaluation, and grounding A background ...

Threat Research Engineer, Security Factory: Threat Research

Hiring Organisation
GitLab
Location
London, England, United Kingdom
Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab.An overview of this roleAs a Threat Research Engineer, you’ll take ideas from the first question to a working proof of concept, deploy it, and analyze the results yourself. This … full-stack role, with AI central to how we work. You’ll build agentic workflows for research, analysis, and detection, and use AI tools every day to move faster.What you’ll doResearch new attack surfaces and threat vectors, including AI coding agents, agent plugins, and package ecosystems.Find and responsibly ...

Research Engineer, Latency & Throughput

Location
Greater London, England, United Kingdom
teams are distributed between Europe, North America, Asia and the Middle East. We are creative, low-ego and team-spirited. The Role As a Research Engineer on the Latency & Throughput team, you will push the frontier of LLM inference by researching and prototyping techniques that reduce latency … increase throughput — from speculative decoding and quantization to KV compression and new attention variants. The team sits at the intersection of research and production: you will take ideas from recent literature, form hypotheses, run experiments, and ship the techniques that prove out into our serving stack. This role sits ...

AI Research Engineer: Agent Orchestration & Evaluation

Location
Greater London, England, United Kingdom
Tessl, a London-based AI-native development startup, seeks a Research Engineer for the AI Research team. You will shape the outer loop of agent systems, harmonizing model behavior, evaluation, data pipelines, and failure analysis. You’ll work close to customers, prioritizing impact and real workflows … guide research priorities. You'll report to the AI Research Lead and collaborate with engineering, product, and design. #J-18808-Ljbffr ...

Frontier RL Research Engineer - Equity & Big Compute

Location
Greater London, England, United Kingdom
Recurvia in London is seeking an exceptional Reinforcement Learning Research Engineer to join our research team. You will design and evaluate novel RL algorithms, run large-scale experiments, and turn research into robust, production-ready systems. You will work closely with research scientists and engineers ...

Applied Research Engineer: Explainable LLM & Retrieval

Location
Greater London, England, United Kingdom
Seisa is seeking an Applied Research Engineer to bridge research and production. You will design, evaluate, and ship models and retrieval systems that reason over complex financial information with provenance and explainability built in. You will work on LLM and retrieval pipelines, perform rigorous evaluations and benchmarks … focus on accuracy, grounding, and explainability while shipping research into the product alongside engineering. #J-18808-Ljbffr ...

Founding AI Research Engineer

Location
Greater London, England, United Kingdom
Catapult is hiring a Founding AI Research Engineer to shape its scientific and research direction. The work spans retrieval and knowledge-base systems, reasoning models, and models that reason about information on screen and across other applications. You will work end to end: framing a problem, forming … testing hypotheses, building the system, and carrying it through to a product people use. What you will do Identify and solve difficult technical and research-level problems. Build products end to end, from experimentation to user-facing applications. Bring depth in NLP, vision, and AI research. Find the next ...

Research Engineer: Generative AI & ML Systems (Hybrid)

Location
Greater London, England, United Kingdom
Principle HR in London is 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 … cutting-edge infrastructure and research initiatives in a fast-moving, ambiguous environment where priorities evolve rapidly. #J-18808-Ljbffr ...

Member of Technical Staff- Research Engineer (Harness Engineering and Agentic Orchestration)

Location
Greater London, England, United Kingdom
build and scale a company operating at the forefront of AI and software development. Overview of the role We’re hiring a Research Engineer to join our AI Research (AIR) team. You'll work on the components that make the outer loop real: how agent harnesses orchestrate … them that way. We expect you to sit close to customers — joining calls, watching sessions, reading traces — and to let real workflows shape your research priorities. You'll have meaningful autonomy and the resources to run substantial experiments where the bar for success is shipped impact. You’ll report ...

3D Computer Vision Research Engineer, Geospatial Visual Localization

Location
Greater London, England, United Kingdom
want to help AI understand the world we actually live in, come build with us. About the Role We are looking for a Research Engineer to help develop our Geospatial Visual Localization technologies, which allows people and robots to accurately localize themselves anywhere on the planet. This … applied research role. You will develop new approaches to open problems alongside our researchers in 3D vision and machine learning, and publish your work at leading conferences. You will help build and train large models on large-scale multi-modal datasets, including our proprietary collection of 30 billion posed ...

AI Security Research Engineer: Agentic Systems

Location
Greater London, England, United Kingdom
Hamilton Barnes Associates Limited in London is seeking an ML Research Engineer to join its Innovation & Research team and help develop AI-powered security operations capabilities. The role focuses on building and evaluating AI and agentic systems, improving machine learning workflows, and researching security challenges such ...

Geospatial 3D Vision Research Engineer

Location
Greater London, England, United Kingdom
Niantic Spatial, Inc. in London seeks a Research Engineer to advance Geospatial Visual Localization—enabling people and robots to locate themselves globally. You will work with 3D vision, ML research, and large multi-modal datasets, culminating in production-ready systems. You will publish research at leading … venues and collaborate across research and engineering teams to deliver high-impact solutions for real-world spatial reasoning in dynamic environments. #J-18808-Ljbffr ...

Quantitative Research Engineer

Location
Greater London, England, United Kingdom
impact, beyond just a paycheck. We welcome talented engineers and researchers. Explore our roles, including project-based opportunities and internships. Join our team Quantitative Research Engineer You are the bridge between cutting-edge research and high-performance reality. You willpartner with quantitative researchers to implement, optimize … Python. Develop and enhance our high-fidelity backtesting and simulation platform. Optimize code for low-latency and high-throughput execution. Assist in the research process by providing a strong engineering and systemsperspective. Our culture/Why work with us Work with us, grow with us, win with us Evidence ...

Research Engineer — Audio AI & Model Training (Remote)

Location
Greater London, England, United Kingdom
ElevenLabs is hiring a Research Engineer to join the research team. You will work on the frontier of audio AI, training state-of-the-art models and improving data quality through post-training, data curation, and architectural enhancements. This remote role offers global collaboration and the chance ...

AI Research Engineer

Location
Greater London, England, United Kingdom
looking for PostHog is working on a self-driving product and is training its own Deep ML models. This new AI Research team needs an AI Research Engineer who can work with our large data set, develop models, and ship production‐ready solutions. What … London Office. What we’re not looking for Pure theoretical expertise – this is not a Jupyter notebook job. Someone who only wants to research and publish; shipping has priority. EEO & Accessibility If you have a disability, please let us know if there's any way we can make ...

Lead Multi-Agent Learning Research Engineer

Location
Greater London, England, United Kingdom
Google DeepMind in London seeks a Research Engineer for Multi-Agent Learning to advance novel algorithms and scalable frameworks. You will build experiments, prototypes, and production-quality code while collaborating with researchers across the globe. The role emphasizes mentoring junior engineers, partnering with Research Scientists, and contributing … robust research pipelines on DeepMind's cutting-edge infrastructure, including TPU pods. #J-18808-Ljbffr ...

High-Impact Quant Research Engineer

Location
Greater London, England, United Kingdom
Marsbridge Capital Limited is seeking a Quantitative Research Engineer to bridge cutting-edge research and high-performance systems. You will work with researchers to implement, optimize, and backtest complex trading strategies using C++ and Python. The role emphasizes production-quality code, low-latency optimization, and robust data … driven experimentation. Join a team that values ownership and practical impact, with opportunities across research and production environments. #J-18808-Ljbffr ...

Research Engineer: Quantitative Trading Software

Location
Greater London, England, United Kingdom
diversified trading firm seeking a Research Engineer to join its systematic research team. You will work with technologists, researchers, and traders to solve computing problems across software design, data engineering, distributed computing, and quantitative modeling. You should have a Bachelor's in CS/CE or related ...

Research Engineer — Multimodal AI & Data Curation

Location
Greater London, England, United Kingdom
Encord, a leading AI data platform, seeks a Research Engineer to advance robotics, computer vision, and multimodal research across data curation, annotation, evaluation and quality control. You will work on end-to-end prototypes and contribute to core product. The role emphasizes fundamentals, independent research ...

ML Research Engineer - Multi-Scale AI for Physical Tech

Location
Greater London, England, United Kingdom
that power Orbital Industries to their own teams and products. We have an ambitious mission and need excellent people in all our teams - AI research, operations, advanced materials, mechanical engineering, chemical engineering and manufacturing. Working at Orbital Industries means working in vertically integrated teams across the full stack, from … looking for people who have a love of physical technology, curiosity in AI and a desire to learn. As a Machine Learning Research Engineer at Orbital, you will architect cutting-edge AI systems for the multi-scale design of physical technologies. When we say multi-scale, we mean ...

Founding AI Research Engineer - Equity & Visa (London)

Location
Greater London, England, United Kingdom
Catapult is hiring a Founding AI Research Engineer to shape its scientific and research direction. The work spans retrieval and knowledge-base systems, reasoning models, and models that reason about information on screen and across other applications. You will work end to end: framing a problem, forming ...

VLM Research Engineer London ·

Location
Greater London, England, United Kingdom
Engineering · London# VLM Research Engineer* Full-timeApply for this roleYou'll take open-weight vision-language models and post-train them for specific intelligence tasks on images and video, owning the work from data to production.## About SidneySidney is an AI intelligence platform that runs investigations … matter.Sidney is live, with a growing base of customer and trial users. Analysts rely on it in their day-to-day work for deep research, person investigations, corporate due diligence and image and video analysis, and what they need shapes what we build next.## What you'll be involved ...