126 to 150 of 241 LLM Jobs in Central London

Role: AI Developer Location: London Duration: 5 Months Day rate: £540 - £585 Umbrella Only Minimum of 5 years UK residency required Role Description: We're looking for an experience AI developer with the skills below. They'll be building out More ❯

Senior LLM Engineer – London | Hybrid (2 days per week on-site, Bank area) My client is a long-established consultancy that originally built its reputation in data engineering and wider data transformation, and over the past few years has grown a strong applied AI practice. They tend to work with UK organisations where data security, reliability and explainability actually matter … group is around eight senior engineers, with backing to grow sensibly (not a hiring spree). This role sits within that team and is focused on designing and deploying LLM systems that make it into production, are cost-efficient, and work reliably in the real world. What you’ll be doing: • Owning the design and build of LLM-based systems … and privacy are real constraints • Working closely with both internal engineers and client teams to ensure what gets built actually lands well What they’re looking for: • Hands-on LLM experience beyond prototyping/notebooks • Strong Python and experience with PyTorch/Hugging Face/similar tooling • Experience deploying models into production (not just training them) • Familiarity with vector stores More ❯

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our More ❯

pipelines (ETL/streaming/CDC) and entity resolution for graph population Author complex queries (Cypher, GSQL, AQL, SPARQL etc. depending on stack) Integrate knowledge graph retrieval & reasoning into LLM/RAG/GraphRAG systems Develop and evaluate graph ML/embedding models (link prediction, anomaly detection) Optimize graph performance, scaling, and query efficiency Liaise with client stakeholders: translate business … technology: Neo4j, TigerGraph, ArangoDB, OrientDB, or Stardog Proficiency in query languages (Cypher, GSQL, AQL, SPARQL, etc.) Strong background in pipelines, ETL, and entity resolution Exposure to integrating KG + LLM or RAG architectures Experience with graph algorithms, embeddings, or GNNs Cloud & production engineering literacy (AWS/Azure/GCP, containerization, CI/CD) Excellent communication skills — able to explain complex … graph/AI concepts to non-technical audiences ✅ Nice-to-Have/Bonus Assets Experience with GraphRAG or KG-backed LLM retrieval Semantic web/ontology skills (RDF/OWL/SHACL) Prior consulting or client delivery background Graph visualization/UI experience (Linkurious, Bloom, Ogma) Graph DB certifications (Neo4j, Stardog, etc.) High visibility & critical client impact Exposure to cutting More ❯

Software Engineer – AI Startup – up to £300k + Equity We are working with an institutionally backed AI startup operating in stealth mode. The company builds large-scale LLMs and the in-house high-performance systems that train and deploy them More ❯

AI Scientist Role Opportunity for an AI Scientist to join a scaling startup in the AI and Healthcare technology sector Salary up to £130k + Equity Paddington based (4–5 days per week in-office) Tech environment: Python | PyTorch | TensorFlow More ❯

At Synthesis we push the boundaries of what’s possible with Open Data. It’s a fast-paced, rapidly-changing environment at the intersection of data science, cultural analysis & brand consultancy. As a Senior Data Scientist at Synthesis, you will More ❯

Role: Engineering Lead/Engineering Manager Location: Hybrid – London Salary: Up to £130,000 + benefits About the Company We’re an award-winning technology company building cutting-edge products that power the future of audience engagement, insight, and brand More ❯

Locai Labs is The British Foundational AI Company based in Paddington London. We are dedicated to building world class large language models at the forefront of cost and efficiency. Our mission is to advance cutting-edge AI from within the More ❯

Lead AI/ML Engineer – Computer Vision & GenAI London, UK | Hybrid We’re supporting a high-growth technology business at the forefront of AI innovation in sport and human performance. They’re looking for a Lead AI/ML Engineer More ❯

We are partnering with an early-stage, mission-driven company at the intersection of AI and national defence to appoint exceptional Full Stack Software Engineers . This fast-growing organisation is transforming mission-critical combat planning and operational decision-making More ❯

AI Engineer | AI Tech Start-Up | £60,000-£85,000 DOE + Share Options | London/Hybrid We are excited to be working with a rapidly growing AI tech scale-up that’s expanding its team with a talented AI More ❯

· 15+ years of IT experience, with at least 5+ years in an enterprise architecture role and 3+ years in AI/ML, including practical experience with Agentic AI systems and Generative AI. · Deep expertise in enterprise architecture frameworks (e.g., TOGAF More ❯

Senior AI Software Engineer - London (3 days a week) - up to £150K plus equity London based - 3 days a week Visa sponsorship is available Salary up to £150K with equity on top A venture-backed Fintech company is looking to More ❯

science, and strategic simulation. The Role As an AI Engineer, you'll build the systems that bring our AI agents to life and scale the infrastructure that powers our LLM-driven synthetic populations. You'll design agent cognitive architectures, implement context engineering and memory systems, while ensuring these AI systems can operate reliably at scale in production environments. This role … deploy them in enterprise settings. What You'll Do Architecture & Development : Design and implement the cognitive systems that give AI agents consistent personalities, memory, and reasoning capabilities, using advanced LLM techniques like chain-of-thought prompting, RAG systems, and agentic tool use. Modeling & Experimentation : Design and run systematic experiments to evaluate agent behavior, test hypotheses about behavioral patterns, and iterate … on model architectures based on empirical results and validation against real-world data LLM Engineering : Build sophisticated prompting strategies, behavioral frameworks, and decision-making systems that enable agents to exhibit realistic human-like behavior across diverse scenarios and demographics. Scalable Infrastructure & Optimization : Architect and deploy backend services that orchestrate large-scale agent simulations, balancing behavioral sophistication with computational efficiency while More ❯

Senior Software/Platform Engineer (LLM/AI Interest) | Brand new AI Platform 💰 £120,000 - £130,000 📍 London - 4 days a week in office (Paddington) 🛠️ Python, GCP, Kubernetes, Terraform, CI/CD, AI/LLM exposure/interest Here at Burns Sheehan, we’re working with a leading UK tech business in the payments and financial services space - processing billions … at scale. Automating infrastructure/model deployments using Kubernetes, Terraform, and CI/CD pipelines. Building and managing vector databases and retrieval systems to support RAG pipelines. Working with LLM frameworks like LangChain , LangGraph , CrewAI , or similar tools. Partnering closely with engineering, security, and product teams to deliver safe, production-ready AI systems. What They’re Looking For: Strong background … Python, Java or Go. Experience with Kubernetes, Terraform, and cloud environments (GCP preferred). Understanding of microservices, distributed systems, and cloud-native architecture. Interest or experience in AI infrastructure, LLM tooling, or AI platform enablement. A collaborative engineer who enjoys problem-solving and contributing to technical direction. If you’re interested in helping build real AI infrastructure within a fast More ❯

integrate them into sites, videos and real‐world systems. We’re looking for an AI Infrastructure Engineer to build and scale the systems behind the AI video generation and LLM models. You’ll work at the intersection of machine learning and cloud infrastructure, ensuring our models run efficiently, reliably, and cost-effectively at scale. Key Responsibilities Design, deploy, and manage … ML infrastructure on AWS (SageMaker) and Kubernetes Build scalable pipelines for LLM and video generation models Optimise model inference, latency, and costs Implement monitoring, logging, and alerting for production systems Collaborate with ML teams to productionize new models Manage compute scaling, security, and compliance Develop automation and tooling for smoother ML operations Skills & Experience Strong Python skills and production coding More ❯

integrate them into sites, videos and real‐world systems. We’re looking for an AI Infrastructure Engineer to build and scale the systems behind the AI video generation and LLM models. You’ll work at the intersection of machine learning and cloud infrastructure, ensuring our models run efficiently, reliably, and cost-effectively at scale. Key Responsibilities Design, deploy, and manage … ML infrastructure on AWS (SageMaker) and Kubernetes Build scalable pipelines for LLM and video generation models Optimise model inference, latency, and costs Implement monitoring, logging, and alerting for production systems Collaborate with ML teams to productionize new models Manage compute scaling, security, and compliance Develop automation and tooling for smoother ML operations Skills & Experience Strong Python skills and production coding More ❯

integrate them into sites, videos and real‐world systems. We’re looking for an AI Infrastructure Engineer to build and scale the systems behind the AI video generation and LLM models. You’ll work at the intersection of machine learning and cloud infrastructure, ensuring our models run efficiently, reliably, and cost-effectively at scale. Key Responsibilities Design, deploy, and manage … ML infrastructure on AWS (SageMaker) and Kubernetes Build scalable pipelines for LLM and video generation models Optimise model inference, latency, and costs Implement monitoring, logging, and alerting for production systems Collaborate with ML teams to productionize new models Manage compute scaling, security, and compliance Develop automation and tooling for smoother ML operations Skills & Experience Strong Python skills and production coding More ❯

Machine Learning Specialist III Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is More ❯

AI Scientist Role Opportunity for an AI Scientist to join a scaling startup in the AI and Healthcare technology sector Salary up to £130k + Equity Paddington based (4-5 days per week in-office) Tech environment: Python | PyTorch | TensorFlow More ❯

infrastructure, streamline operations, and contribute to architectural decisions. This is a full hands-on engineering position, offering significant influence over technology choices and the opportunity to introduce AI/LLM integrations into the platform as it evolves. Key Responsibilities Design, build, and manage a secure, scalable platform environment in AWS. Implement and maintain container orchestration using Kubernetes. Develop automation tooling … Ensure compliance with financial services regulations and internal security policies. Contribute to CI/CD pipelines and cloud-native observability solutions. Explore and integrate emerging technologies including AI/LLM-based solutions to enhance automation and operational efficiency. Key Skills & Experience Essential: Strong hands-on experience with AWS (EC2, VPC, IAM, S3, ECS/EKS, etc.) Solid understanding of Linux … DevOps, Platform Engineering, or Infrastructure as Code (IaC) environments Strong awareness of security, compliance, and resilience in financial or regulated sectors Desirable: Experience introducing or working with AI/LLM solutions Familiarity with Terraform, Ansible, GitLab CI/CD, or similar tools Exposure to financial services or other highly regulated industries Experience with observability stacks (Prometheus, Grafana, ELK, etc. More ❯

I’m working with a top AI firm hiring Senior Software Engineers into their R&D team, building systems that push the limits of computer vision, deep learning, and autonomous vehicle/machinery. You’ll be joining brilliant minds from More ❯

Senior AI & Machine Learning Instructor – Apprenticeship & Commercial Delivery Remote (UK) | £55,000 – £70,000 DOE | Full-time, 9am–5pm (occasional global sessions) Join a world-leading digital educator shaping the next generation of Machine Learning Engineers. We're looking for More ❯

About Envision Envision Energy is a world-leading green technology company that provides renewable energy solutions for global enterprises, governments, and institutions. Encompassing three major business sectors - Smart Wind Turbines, Energy Storage, and Green Hydrogen Solutions, Envision Energy collaboratively constructs More ❯