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Machine Learning Jobs in London

The UK's financial and tech hub, home to a thriving ecosystem of startups, scaleups, and established tech giants. A hotbed for machine learning talent and innovation.

Open roles
285
Salary range
£59k – £250k
Hiring companies
52
View 285 live roles → Get an alert

London is the epicentre of the UK's tech and financial sectors, making it a prime location for machine learning professionals. The city hosts a diverse range of companies, from cutting-edge startups to global tech giants, all of which are actively hiring machine learning experts. Whether you're working on natural language processing, computer vision, or reinforcement learning, London offers a dynamic environment with ample opportunities for growth and collaboration. Many roles are hybrid or fully remote, but the city's vibrant tech scene and networking events provide a rich on-site experience.

Salary on the board

£59k – £250k

Based on advertised midpoints across the 58 UK listings priced in pounds in the last 12 months. Base salary only.

Salary visibility
24% of listings advertise a salary.
By seniority
£k base
Mid
52
253
5 jobs
Senior
65
190
21 jobs
Lead
70
178
6 jobs
Live jobs

285 live roles

See all 285 roles →

Software Engineer, Codex Core Agents

This role involves designing and building the infrastructure that powers Codex agents in production, focusing on sandboxed execution, orchestration, stateful workflows, and model rollouts. You will work on distributed systems, developer tooling, and AI to ensure Codex is fast, reliable, and secure.

OpenAI London, United Kingdom
Permanent

Member of Technical Staff, Integration/RL Team (Research Engineer)

This role involves developing and scaling machine learning algorithms and infrastructure for large-scale, distributed reinforcement learning. You will design and implement high-performance software, optimize post-training algorithms, and collaborate with engineering and scientific teams to enhance the quality of the post-training codebase.

Cohere London, United Kingdom
Remote Permanent

Senior Research Scientist, Model Evaluation

This role involves creating new evaluation benchmarks for large language models (LLMs), working with cross-functional teams to refine evaluation methods, and building scalable tools to measure model performance. The focus is on advancing the state-of-the-art in LLM evaluation and ensuring rigorous, repeatable assessments.

Cohere London, United Kingdom
Hybrid Permanent

Applied AI Engineer, Government, International

This role involves delivering AI solutions to international public-sector customers, working closely with government agencies and technical teams to identify and implement high-value applications. Responsibilities include hands-on implementation, strategic guidance, and collaboration with various stakeholders to ensure successful deployment and scale.

OpenAI London, United Kingdom
Hybrid Permanent

Data Scientist

Design and deliver bespoke data science solutions for high-impact projects in the defence sector, working closely with clients and cross-functional teams. Drive technical scoping, build scalable algorithms, and uphold rigorous standards in code and model validation. Contribute to thought leadership through open-source, teaching, or public speaking while operating in a secure, ethical AI environment.

Faculty London, United Kingdom
Hybrid Permanent

Principal Machine Learning Engineer

This role involves leading the design and implementation of scalable machine learning systems within high-stakes defence projects. You'll act as a technical authority, solving cross-cutting challenges, shaping architectural strategy, and mentoring engineering teams. The work combines advanced AI innovation with real-world deployment in secure, mission-critical environments.

Faculty London, United Kingdom
Hybrid Permanent
Databricks logo

Senior Specialist Solutions Architect (AI/ML)

Design and implement production-grade machine learning and AI workloads on the Databricks platform, with a focus on GenAI, MLOps, and LLMOps. Lead technical engagements with enterprise customers, build end-to-end AI pipelines, and provide expert guidance on RAG architectures, agentic systems, and AI observability. Mentor internal teams and influence product direction by representing customer needs in AI roadmap discussions.

Databricks London, United Kingdom
Hybrid Permanent
AI Security Institute logo

Expression of Interest- Chem Bio

This role involves conducting research to assess and mitigate chemical and biological risks from frontier AI systems. You'll design evaluations, develop benchmarks, and collaborate with experts across science, security, and policy. Work includes threat modelling, safeguard development, and translating technical findings into actionable insights for governments and AI developers.

AI Security Institute London, United Kingdom £65,000 – £145,000 pa
Hybrid Permanent Clearance Required
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Roles hiring here

Roles hiring in London

The most-listed roles in this cluster right now. Tap through to a role profile when one exists, or to the live search results.

Machine Learning Engineer Jobs

£60k – £630k
36 open

ML Research Engineer Jobs

£80k – £640k
16 open

ML Platform Engineer Jobs

£325k – £485k
10 open

ML Infrastructure Engineer Jobs

£255k – £485k
8 open

Machine Learning Scientist Jobs

Role profile
7 open

Reinforcement Learning Engineer Jobs

£260k – £640k
4 open
Top hirers

Hiring here right now

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The scene

Hiring in London

London's tech ecosystem is robust and diverse, with a high concentration of machine learning roles. Companies ranging from fintech startups to global tech giants are actively recruiting, offering a wide array of opportunities for professionals at all levels.

The city's strong network of tech meetups, conferences, and industry events provides a platform for continuous learning and professional growth. Whether you're looking to advance your career or connect with like-minded professionals, London's vibrant tech community is a valuable resource.

FAQs

Common questions

  • London is home to a wide range of companies, including startups, scaleups, and established tech giants. Many financial institutions and research-heavy organisations also hire machine learning experts.

  • Many roles in London offer hybrid or fully remote options, but the city's vibrant tech scene and networking events make on-site work a valuable experience.

  • In-demand skills include expertise in deep learning, natural language processing, and reinforcement learning, as well as proficiency in Python and TensorFlow.

  • For detailed salary information, check the salary section on this page, which is updated with live job listings and market data.

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