1 to 25 of 72 LlamaIndex Jobs in London

Senior AI Architect| London

Location
Greater London, England, United Kingdom
models, and earlier architectures such as GANs and VAEs. Experience across text, code, image, and multimodal generation; advanced prompt engineering; orchestration frameworks (LangChain, LangGraph, LlamaIndex, Semantic Kernel). Hands‐on exposure to both API‐based (Claude, GPT, Gemini) and open‐source (Llama, Mistral) LLM‐based solution design. Agentic AI & Multi ...

Forward-Deployed Engineer (FDE)

Hiring Organisation
NTT DATA
Location
London, United Kingdom
Salary
£ 80 K
agentic AI, data science, or automation solutions.Hands-on experience with programming languages and frameworks such as Python, JavaScript/TypeScript, FastAPI, Flask, React, LangChain, LlamaIndex, PyTorch, TensorFlow, or similar technologies.Experience integrating APIs, data sources, model providers, workflow tools, and cloud services into working demos or prototypes.Working knowledge of responsible ...

Forward-Deployed Engineer (FDE)

Hiring Organisation
NTT
Location
London, UK
Employment Type
Full-time
data science, or automation solutions. Hands-on experience with programming languages and frameworks such as Python, JavaScript/TypeScript, FastAPI, Flask, React, LangChain, LlamaIndex, PyTorch, TensorFlow, or similar technologies. Experience integrating APIs, data sources, model providers, workflow tools, and cloud services into working demos or prototypes. Working knowledge of responsible ...

Principal Architect AI

Location
Greater London, England, United Kingdom
Python programming with hands-on experience using modern AI/ML tooling (such as PyTorch or TensorFlow) and enterprise frameworks (such as LangChain, LlamaIndex, CrewAI, or Haystack). A proven track record of designing RESTful APIs, microservices, and event-driven architectures to build and ship production-ready, enterprise-grade ...

Gen AI Python Developer

Location
Greater London, England, United Kingdom
optimization techniques* Knowledge of Fine-Tuning methodologies, including LoRA and QLoRA* Experience working with Hugging Face libraries and model repositories* Proficiency in LangChain and LlamaIndex for building AI-powered workflows* Experience implementing Retrieval-Augmented Generation (RAG) frameworks* Knowledge of Vector Databases and Hybrid Search techniques* Strong understanding of Natural Language ...

Principal Architect AI

Hiring Organisation
Anaplan
Location
London, United Kingdom
Salary
£ 80 K
Python programming with hands-on experience using modern AI/ML tooling (such as PyTorch or TensorFlow) and enterprise frameworks (such as LangChain, LlamaIndex, CrewAI, or Haystack).A proven track record of designing RESTful APIs, microservices, and event-driven architectures to build and ship production-ready, enterprise-grade AI solutions ...

Full Stack Engineer

Hiring Organisation
Response Informatics
Location
South East London, London, United Kingdom
Employment Type
Contract
OpenAI, Anthropic, Gemini, Llama, Mistral, HuggingFace, and emerging AI platforms. Hands-on experience with AI orchestration and agent frameworks including LangChain, LangGraph, Semantic Kernel, LlamaIndex, CrewAI, and AutoGen. Strong knowledge of Prompt Engineering, RAG, Vector Databases (Pinecone, Weaviate, Chroma, FAISS, Azure AI Search), Model Fine-Tuning, LLMOps, and Secure ...

Data Scientist

Location
Greater London, England, United Kingdom
engineers, MLOps, and product teams to build end-to-end AI applications and APIs. Develop custom prompts and prompt chains using tools like LangChain, LlamaIndex, PromptFlow, or custom frameworks. Evaluate model performance, mitigate bias, and optimize accuracy, latency, and cost. Stay up to date with the latest trends in LLMs ...

AI Consulting –Sr. AI Architect & Client Partner

Location
Greater London, England, United Kingdom
tracking, observability, model lifecycle management. Responsible AI : governance frameworks, guardrails, model safety, compliance, and auditability. Preferred but not required Orchestration frameworks : LangChain/LangGraph, LlamaIndex, CrewAI, AutoGen, DSPy, Semantic Kernel, Strands. Advanced retrieval : Graph RAG, knowledge graphs, context graphs, hybrid search, vector databases. Agentic patterns : multi-agent architectures, planning ...

Head of AI Solutions, COO Technology - MD (C16)

Location
Greater London, England, United Kingdom
scalable inference infrastructure, and vector stores. Programming & Frameworks: Strong Python proficiency; working knowledge of PyTorch or TensorFlow; applied experience with AI application frameworks (LangChain, LlamaIndex, or equivalents). Enterprise AI Architecture: Designing AI systems for regulated production environments: data security, model explainability, audit logging, access controls, and integration with legacy ...

Head of AI Solutions, COO Technology - MD (C16)

Location
Greater London, England, United Kingdom
scalable inference infrastructure, and vector stores* Programming & Frameworks: Strong Python proficiency; working knowledge of PyTorch or TensorFlow; applied experience with AI application frameworks (LangChain, LlamaIndex, or equivalents)* Enterprise AI Architecture: Designing AI systems for regulated production environments: data security, model explainability, audit logging, access controls, and integration with legacy systems ...

Head of AI Solutions, COO Technology - MD (C16)

Hiring Organisation
Citigroup
Location
London, United Kingdom
Salary
£ 120 K
services, scalable inference infrastructure, and vector storesProgramming & Frameworks: Strong Python proficiency; working knowledge of PyTorch or TensorFlow; applied experience with AI application frameworks (LangChain, LlamaIndex, or equivalents)Enterprise AI Architecture: Designing AI systems for regulated production environments: data security, model explainability, audit logging, access controls, and integration with legacy systemsLeadership ...

Dev Ops Lead Virtual Assistant and Automation

Hiring Organisation
BP Energy
Location
Sunbury-On-Thames, London, United Kingdom
into real-world systems Experience with LLMs, RAG, vector search, conversational AI, or unstructured data pipelines Familiarity with AI tooling/frameworks (e.g. LangChain, LlamaIndex, Haystack, Hugging Face, CrewAI) Experience leading SaaS/cloud-based HR or enterprise platforms Skilled at using data and analytics to identify outcomes and improve ...

Senior AI

Hiring Organisation
Anson McCade
Location
London, United Kingdom
Salary
£ 80 K
experience leading technical teams and mentoring engineers.DesirableExperience within EdTech, SaaS, or digital consumer products.Knowledge of adaptive learning, recommendation systems, or educational analytics.Experience with LangChain, LlamaIndex, vector databases, and AI orchestration frameworks.Understanding of responsible AI, privacy, and ethical AI development.Passion for improving education through technology.Reference: AMC/DJA/SAIML#dajaApply ...

Software Development Engineer IV/Senior

Hiring Organisation
Capital Group
Location
London, United Kingdom
Salary
£ 100 K
another regulated enterprise environment. Experience with vector databases (for example pgvector, Pinecone, Weaviate, or Chroma) and agent or orchestration frameworks (for example LangChain, LlamaIndex, or the Model Context Protocol). Experience with MLOps/LLMOps tooling such as experiment tracking, model versioning, monitoring, evaluation/observability platforms, or CI/ ...

ML Engineer

Location
Greater London, England, United Kingdom
control and CI/CD Cloud experience, ideally within Azure Previous experience mentoring or guiding engineers Experience with Azure AI Foundry, MLflow, MCP, LangChain, LlamaIndex, LangGraph, agentic AI, Azure OpenAI or AI Search would be highly beneficial. This is an excellent opportunity for someone who understands how to move ...

Backend Software Engineer Python LLM - Finance

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 80 K
with advanced stakeholder communication, problem-solving and project management skills in Agile environmentsExperience with any of the following is advantageous: agentic frameworks (e.g., LangChain, LlamaIndex), deep learning frameworks, Langfuse, Langsmith, MCP (Model Context Protocol), bias mitigation techniquesApply now to find out more about this Backend Software Engineer/Developer (Python ...

Backend Software Engineer Python LLM - Finance

Hiring Organisation
Client Server
Location
East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
advanced stakeholder communication, problem-solving and project management skills in Agile environments Experience with any of the following is advantageous: agentic frameworks (e.g., LangChain, LlamaIndex), deep learning frameworks, Langfuse, Langsmith, MCP (Model Context Protocol), bias mitigation techniques Apply now to find out more about this Backend Software Engineer/Developer ...

Data Engineer - Tech Lead (Databricks, Pyspark)

Location
Greater London, England, United Kingdom
both technical and non-technical audiences Nice to have Experience operationalizing LLM or Generative AI workflows in Databricks pipelines Familiarity with frameworks like LangChain, LlamaIndex or Databricks ML/MosaicML Knowledge of AI governance, security practices and enterprise integration controls Background in financial trading data or related domains Official Databricks ...

Senior Forward Deployed Engineer

Hiring Organisation
Uniphore
Location
London, United Kingdom
Salary
£ 100 K
systems (REST, Python, SQL, GraphQL, Webhooks etc). Solid understanding of LLMs, Prompt engineering/tuning, Vector DBs (AstraDB, Pinecone, Weaviate etc), RAG pipelines (LlamaIndex, Haystack) and Agent/Workflow Orchestration (LangChain, LangGraph, CrewAI) Knowledge of SLM Finetuning and Distillation is big advantage. Experience and knowledge of Agentic development platforms ...

Lead AI Engineer

Hiring Organisation
Capco
Location
London, United Kingdom
Salary
£ 80 K
MLOps, observability, and cloud-native AI deploymentExcellent communication, problem-solving, and project management skills in agile environmentsBonus Points ForExperience with agentic frameworks (e.g., LangChain, LlamaIndex)Experience in deep learning frameworks and front-end developmentFamiliarity with Langfuse, Langsmith, or other LLM observability toolsUnderstanding of Model Context Protocol and bias/hallucination ...

Senior AI Platform Engineer

Hiring Organisation
9fin
Location
London, United Kingdom
Salary
£ 80 K
being designed and built.Bonus PointsExperience with any of the following would be highly advantageous:AI gateways and model routingPrompt management platformsAI evaluation frameworksLangGraph, LangChain, LlamaIndex, DSPy, CrewAI or similar orchestration frameworksVector databases and semantic retrievalKnowledge graphs or document understanding systemsBuilding internal AI platforms used by multiple engineering teamsBenefitsWe ...

Senior AI Engineer

Hiring Organisation
PA Consulting
Location
London, United Kingdom
Salary
£ 80 K
hands-on with emerging technologies – exploring what works, what scales, and what’s next:Experimenting with Generative AI frameworks and tools such as LangChain, LlamaIndex, Hugging Face, and APIs from OpenAI and Anthropic.Building retrieval-augmented generation (RAG) prototypes with vector stores and knowledge graphs.Developing and testing agentic architectures through ...

Agentic Commerce Architect

Hiring Organisation
Accenture
Location
London, United Kingdom
Salary
£ 80 K
agentic AI systems — including LLM-powered application design, retrieval-augmented generation (RAG) architectures, and at least one agentic AI framework (e.g. LangGraph, LangChain, LlamaIndex, CrewAI) Experience designing and building data and context pipelines for AI systems — including embedding pipelines, vector databases, and semantic search applied to structured commerce data Familiarity ...

Software Development Engineer III

Hiring Organisation
Capital Group
Location
London, United Kingdom
Salary
£ 100 K
another regulated enterprise environment. Experience with vector databases (for example pgvector, Pinecone, Weaviate, or Chroma) and agent or orchestration frameworks (for example LangChain, LlamaIndex, or the Model Context Protocol). Experience with MLOps/LLMOps tooling such as experiment tracking, model versioning, monitoring, evaluation/observability platforms, or CI/ ...