226 to 250 of 302 LangChain Jobs in London

in building and deploying LLM solutions. This place has a high technical bar, so solid Python skills are a must. Experience with agentic frameworks and familiarity with agentic systems – LangChain, LangGraph, AutoGen, etc. Commercial experience deploying LLM applications to production (this isn’t a research role). Experience taking the lead on projects from a "tech lead" perspective (only relevant More ❯

from the ground up. Bonus Points For: Experience building SaaS platforms, especially in Fintech. Background in autonomous systems, workflow automation, or AI-driven decision engines. Experience with tools like LangChain, semantic search, vector databases, or RAG pipelines. Why Join? Be part of the founding team of a well-funded, high-potential startup. Work on problems that are messy, complex, and More ❯

Framework Core . Understanding of web accessibility and development best practices. Bonus Skills: Experience with NoSQL databases (e.g., MongoDB, Cosmos DB). Exposure to AI/LLM integrations (e.g., Langchain or similar tools). Working knowledge of design systems , such as the GOV.UK Design System . Why Join? Work on meaningful digital products that impact lives. Join a collaborative team More ❯

with Node.js, Express, RESTful APIs or GraphQL Experience building production-grade applications and designing clean data models (SQL/NoSQL) Bonus Points For: Familiarity with AI/LLM tools (LangChain, Vercel AI SDK, OpenAI APIs) Experience building real-time apps (e.g., WebSockets) Understanding of authentication/authorization flows in web apps Knowledge of financial services, fintech, or enterprise-grade products More ❯

with clean code Understands the full lifecycle of shipping software — from idea to deployment Speaks English comfortably Cares about sustainability and wants to build for impact Nice to have: LangChain/LangGraph Cursor What we offer: Flexible form of contract (B2B/UoP/other) Hybrid work setup (our office is in Warsaw ) Benefits package (private medical care, sports card More ❯

grasp of Git, version control, and modern dev workflows. Experience with analytics tools such as Hotjar, Google Analytics, or Mixpanel. Nice to Haves: Experience building with chatbot frameworks like LangChain, Dialogflow, or custom GPT tools. Familiarity with A/B testing platforms such as Google Optimize or Optimizely. Previous work on fintech or crypto products. Exposure to frontend/backend More ❯

Postgres Familiarity with web standards, accessibility, and development best practice Building microservices in C# or Java Experience building solutions that integrate with LLMs using tools such as Vercel AI, Langchain etc. Using the GOV.UK Design System and using Nunjucks WHAT YOU'LL LOVE ABOUT WORKING HERE: We are delighted to have received the "Glassdoor Best Places to work UK' accolade More ❯

as Postgres Familiarity with web standards, accessibility, and development best practice Bonus: Building microservices in C# Experience building solutions that integrate with LLMs using tools such as Vercel AI, Langchain etc. Using the GOV.UK Design System and using Nunjucks WHAT YOU'LL LOVE ABOUT WORKING HERE: We are delighted to have received the "Glassdoor Best Places to work UK' accolade More ❯

where this was necessary. You either have professional experience using LLMs or have enthusiastically experimented in your own time. Industry experience with LLM toolchains and ecosystems (e.g. libraries like Langchain, observability tooling, RAG systems, etc.) is a plus. You have a fundamental understanding of code analysis, compilers, domain-specific languages, or related topics, and are keen to learn in this More ❯

languages (e.g., Java or JS/TS) Experience integrating with NoSQL databases (e.g., MongoDB or Cosmos DB) Exposure to developing solutions that integrate with LLMs using tools such as Langchain, etc. Familiarity with modern design systems and templating engines (e.g., Razor or the GOV.UK Design System) WHAT YOU'LL LOVE ABOUT WORKING HERE: We are delighted to have received the More ❯

using IDE integrations with AI agents Coding with LLMs, e.g. setting up Cursor/Copilot configs, and writing prompts for coding/debugging Integrating/Pipelining with LLMs, e.g. langchain Customising LLM tools, e.g. fine tuning LLMs, using RAG systems You'll need to have significant expertise and experience in a real-world setting, be able to give nuanced answers More ❯

GenAI Python Engineer - 10-Month Contract Are you a Python engineer with expertise in Generative AI? Join a leading global financial institution to work on cutting-edge projects that leverage advanced AI technologies. About Us We are a global leader More ❯

Title: Data Scientist Location: London, UK (Hybrid) Job Type: Permanent Job Description: Experience: Minimum of 8+ years. Skilled Required: LLM, RAG, Finetuning, NLP, Text Summarisation, ML, Feature Engineering Llamaindex, LangChain, LangSmith Vector DB, Vector Search, FAISS Embeddings Experience with OCR, layout models PDF and text file parsing, along with various other file types Experience with REST API More ❯

Title: Data Scientist Location: London, UK (Hybrid) Job Type: Permanent Job Description: Experience: Minimum of 8+ years. Skilled Required: LLM, RAG, Finetuning, NLP, Text Summarisation, ML, Feature Engineering Llamaindex, LangChain, LangSmith Vector DB, Vector Search, FAISS Embeddings Experience with OCR, layout models PDF and text file parsing, along with various other file types Experience with REST API More ❯

Role: Senior AI Engineer (x2) 🌍 Location: Shoreditch, London (hybrid - 3 days per week) 💰 Salary: £80,000 - £110,000, plus benefits (below) 🛠 Key Skills: Python, AI/LLMs, LangChain/LangGraph, AI Agents, AWS 🚀 Industry: B2B SaaS Start-up A fast-growing B2B SaaS start-up is looking for a talented Senior AI Engineer to set up and co-lead the … re looking for: AI/ML or LLM-based development in a fast-paced start-up environment. Built and deployed production-grade agentic systems Hands-on experience with PydanticAI, LangChain, LangGraph, or similar agent orchestration tools. Strong understanding of LLM evaluation, prompt design, and techniques for tuning models to domain-specific tasks. Deep understanding of large language models (LLMs), including More ❯

Role: Senior AI Engineer (x2) 🌍 Location: Shoreditch, London (hybrid - 3 days per week) 💰 Salary: £80,000 - £110,000, plus benefits (below) 🛠 Key Skills: Python, AI/LLMs, LangChain/LangGraph, AI Agents, AWS 🚀 Industry: B2B SaaS Start-up A fast-growing B2B SaaS start-up is looking for a talented Senior AI Engineer to set up and co-lead the … re looking for: AI/ML or LLM-based development in a fast-paced start-up environment. Built and deployed production-grade agentic systems Hands-on experience with PydanticAI, LangChain, LangGraph, or similar agent orchestration tools. Strong understanding of LLM evaluation, prompt design, and techniques for tuning models to domain-specific tasks. Deep understanding of large language models (LLMs), including More ❯

Role: Senior AI Engineer (x2) Location: Shoreditch, London (hybrid - 3 days per week) Salary: £80,000 - £110,000, plus benefits (below) Key Skills: Python, AI/LLMs, LangChain/LangGraph, AI Agents, AWS Industry: B2B SaaS Start-up A fast-growing B2B SaaS start-up is looking for a talented Senior AI Engineer to set up and co-lead the … re looking for: AI/ML or LLM-based development in a fast-paced start-up environment. Built and deployed production-grade agentic systems Hands-on experience with PydanticAI, LangChain, LangGraph, or similar agent orchestration tools. Strong understanding of LLM evaluation, prompt design, and techniques for tuning models to domain-specific tasks. Deep understanding of large language models (LLMs), including More ❯

both SaaS and AI/LLM components Integrate and optimize LLMs (e.g., OpenAI , Gemini ) through prompt engineering and API orchestration Implement multi-step AI workflows using frameworks such as LangChain Design and optimize relational databases, particularly MySQL Develop type-safe RPC endpoints using tRPC for seamless frontend-backend communication Rapidly adapt to a modern development stack and contribute to high … and Prisma Strong understanding of MySQL , including schema design and performance optimization Practical experience integrating with LLMs, including prompt design and API management Familiarity with orchestration tools such as LangChain or similar Ability to learn quickly and deliver high-quality features in a dynamic, fast-paced environment Preferred Qualifications Experience deploying and fine-tuning custom AI models Background in developing More ❯

in building and deploying LLM solutions. This place has a high technical bar, so solid Python skills are a must. Experience with agentic frameworks and familiarity with agentic systems – LangChain, LangGraph, AutoGen, etc. Commercial experience deploying LLM applications to production (this isn’t a research role). Experience taking the lead on projects from a "tech lead" perspective (only relevant More ❯

in building and deploying LLM solutions. This place has a high technical bar, so solid Python skills are a must. Experience with agentic frameworks and familiarity with agentic systems – LangChain, LangGraph, AutoGen, etc. Commercial experience deploying LLM applications to production (this isn’t a research role). Experience taking the lead on projects from a "tech lead" perspective (only relevant More ❯

using React and Tailwind CSS. Skilled in managing large databases like PostgreSQL. Familiarity with container orchestration tools such as Docker and Kubernetes. Hands-on experience with LLM libraries like LangChain, LangGraph, LlamaIndex, or Ollama. But most importantly, you're driven by a passion for AI innovation and thrive on solving complex challenges. 🤖 🎉 Why This Role? This is your opportunity to More ❯

using React and Tailwind CSS. Skilled in managing large databases like PostgreSQL. Familiarity with container orchestration tools such as Docker and Kubernetes. Hands-on experience with LLM libraries like LangChain, LangGraph, LlamaIndex, or Ollama. But most importantly, you're driven by a passion for AI innovation and thrive on solving complex challenges. 🤖 🎉 Why This Role? This is your opportunity to More ❯

with modelling intelligent agents, including symbolic, neural, or hybrid approaches. Experience deploying to and managing workloads on MCP or distributed processing environments. Familiarity with libraries such as TensorFlow, PyTorch, LangChain, or Ray is a plus. Ability to write clean, efficient, and well-documented code in a collaborative environment. Desirable: Experience with multi-agent coordination or LLM-based autonomous agents. Background More ❯

with Node.js, Express, RESTful APIs or GraphQL Experience building production-grade applications and designing clean data models (SQL/NoSQL) Bonus Points For: Familiarity with AI/LLM tools (LangChain, Vercel AI SDK, OpenAI APIs) Experience building real-time apps (e.g., WebSockets) Understanding of authentication/authorization flows in web apps Knowledge of financial services, fintech, or enterprise-grade products More ❯

with Node.js, Express, RESTful APIs or GraphQL Experience building production-grade applications and designing clean data models (SQL/NoSQL) Bonus Points For: Familiarity with AI/LLM tools (LangChain, Vercel AI SDK, OpenAI APIs) Experience building real-time apps (e.g., WebSockets) Understanding of authentication/authorization flows in web apps Knowledge of financial services, fintech, or enterprise-grade products More ❯