101 to 125 of 139 LangChain Jobs in Central London

decisions Building robust APIs and backend systems that power real-world AI products Helping shape the engineering culture and technical direction of the company 🛠️ Tech Stack Python | FastAPI | AWS | LangChain | TypeScript | Next.js (You don’t need to know every tool — they’re looking for curious engineers who love to learn fast.) 💰 Compensation & Equity There are no preset limits on salary More ❯

architecture Collaborating closely with the founders on product and scaling decisions Helping shape the company’s engineering standards and culture 🛠️ Tech Stack TypeScript | Next.js | React | Node.js | AWS | Python | FastAPI | LangChain (You don’t need to know every tool — they’re looking for curious engineers who love to learn fast.) 💰 Compensation & Equity There are no preset limits on salary or equity. More ❯

decisions Building robust APIs and backend systems that power real-world AI products Helping shape the engineering culture and technical direction of the company 🛠️ Tech Stack Python | FastAPI | AWS | LangChain | TypeScript | Next.js (You don’t need to know every tool — they’re looking for curious engineers who love to learn fast.) 💰 Compensation & Equity There are no preset limits on salary More ❯

by real customers immediately Help define the technical architecture and product roadmap Experiment with AI-driven automation and large-language-model workflows Tech: TypeScript, React, Node, GraphQL, AWS, Temporal, LangChain (They're open to Engineers from any language background, as long as you're happy in this tech environment). You’ll be a great match for this team if More ❯

by real customers immediately Help define the technical architecture and product roadmap Experiment with AI-driven automation and large-language-model workflows Tech: TypeScript, React, Node, GraphQL, AWS, Temporal, LangChain (They're open to Engineers from any language background, as long as you're happy in this tech environment). You’ll be a great match for this team if More ❯

has accurate, real-time data Implement human-in-the-loop systems where needed Skills and Qualifications Exceptional Python skills and experience with LLM-powered AI orchestration frameworks (e.g., DSPy, LangChain, or similar) Experience in AI-driven automation & orchestration in production environments Proven ability to optimise AI agents for reliability and efficiency Familiarity with data pipelines & integrations Interest in AI process More ❯

has accurate, real-time data Implement human-in-the-loop systems where needed Skills and Qualifications Exceptional Python skills and experience with LLM-powered AI orchestration frameworks (e.g., DSPy, LangChain, or similar) Experience in AI-driven automation & orchestration in production environments Proven ability to optimise AI agents for reliability and efficiency Familiarity with data pipelines & integrations Interest in AI process More ❯

For 1-3+ years of experience in full stack development (React + Node or equivalent stack) Experience integrating and fine-tuning LLMs, embeddings, or vector search (e.g. OpenAI, LangChain, Pinecone, Lovable and Google’s Agent Development Kit or equivalent vide coding platforms) Strong frontend sensibility (you care how things feel and look , not just how they run) Comfort building More ❯

For 1-3+ years of experience in full stack development (React + Node or equivalent stack) Experience integrating and fine-tuning LLMs, embeddings, or vector search (e.g. OpenAI, LangChain, Pinecone, Lovable and Google’s Agent Development Kit or equivalent vide coding platforms) Strong frontend sensibility (you care how things feel and look, not just how they run) Comfort building More ❯

manage vector and keyword indexes; develop NLP and recommendation systems; implement metadata and tagging frameworks. - LLM & ML Applications: Develop and maintain ML and LLM models; build LLM apps with LangChain/LangGraph; apply multimodal AI, prompt engineering, fine-tuning, and model optimization; ensure scalable, reliable, and business-aligned AI solutions. - Platform & Operations (MLOps): Deploy and operate services on Azure; implement … Demonstrated hands-on experience building production AI/LLM applications. - Strong Python, API design, asynchronous programming, and integration skills. - Experience with ML/LLM frameworks (PyTorch, TensorFlow, scikit-learn, LangChain/LangGraph, LlamaIndex). - Familiarity with cloud deployment (Azure), CI/CD, Infrastructure as Code, and MLOps best practices. - Knowledge of databases, vector search, and knowledge graphs. - Understanding of security More ❯

manage vector and keyword indexes; develop NLP and recommendation systems; implement metadata and tagging frameworks. - LLM & ML Applications: Develop and maintain ML and LLM models; build LLM apps with LangChain/LangGraph; apply multimodal AI, prompt engineering, fine-tuning, and model optimization; ensure scalable, reliable, and business-aligned AI solutions. - Platform & Operations (MLOps): Deploy and operate services on Azure; implement … Demonstrated hands-on experience building production AI/LLM applications. - Strong Python, API design, asynchronous programming, and integration skills. - Experience with ML/LLM frameworks (PyTorch, TensorFlow, scikit-learn, LangChain/LangGraph, LlamaIndex). - Familiarity with cloud deployment (Azure), CI/CD, Infrastructure as Code, and MLOps best practices. - Knowledge of databases, vector search, and knowledge graphs. - Understanding of security More ❯

Startup (London/Hybrid) Salary : £100k–140k Equity : 1–3% (founding-level) Hybrid working: Central London, 3 days p/week in office. Tech Stack: TypeScript, Node.js, React, Python, LangChain, OpenAI/Anthropic I’m working with a YC-backed startup that’s building the next generation of AI-native analytics . This is a seed-stage, well-funded company More ❯

of fast, production-grade code shipping. Applied LLMs - Experience deploying multimodal foundation model-based products. Deep knowledge of LLM research, agents, tools, and function calling. Deploying LLMs - Experience with LangChain, indexing, RAG, semantic search, and fine-tuning (SFT/RL) of LLMs/agents. Why Join £100,000 – £170,000 base salary + meaningful equity Visa sponsorship and relocation support More ❯

of fast, production-grade code shipping. Applied LLMs - Experience deploying multimodal foundation model-based products. Deep knowledge of LLM research, agents, tools, and function calling. Deploying LLMs - Experience with LangChain, indexing, RAG, semantic search, and fine-tuning (SFT/RL) of LLMs/agents. Why Join £100,000 – £170,000 base salary + meaningful equity Visa sponsorship and relocation support More ❯

systems across web and mobile technologies. Hands-on exposure to stacks such as TypeScript, Python, Golang, Angular, Native Mobile, and modern databases. Understanding of AI and generative technology (e.g., LangChain, LLMs, ML-based product features) or curiosity to learn. Excellent people leadership and coaching skills – empathetic, balanced, and able to foster a collaborative, inclusive culture. Experience working across multiple client More ❯

systems across web and mobile technologies. Hands-on exposure to stacks such as TypeScript, Python, Golang, Angular, Native Mobile, and modern databases. Understanding of AI and generative technology (e.g., LangChain, LLMs, ML-based product features) or curiosity to learn. Excellent people leadership and coaching skills – empathetic, balanced, and able to foster a collaborative, inclusive culture. Experience working across multiple client More ❯

CD tools (e.g. GitHub Actions, Azure Pipelines). Familiar with Docker and microservices architecture. Solid understanding of RESTful APIs. Bonus: Experience with AI/ML tools like Hugging Face, LangChain, or PyTorch. Tech Stack: Python/JavaScript (Node.js) Docker/Kubernetes Azure/GitHub Actions RESTful APIs/Microservices Hugging Face, LangChain, PyTorch Unfortunately, no sponsorship is available at this More ❯

in fintech, investing, or ESG innovation Nice to Haves Comfortable working with tools like Postgres, Prisma, GraphQL, or Next.js Hands-on experience with AI or agent frameworks (such as LangChain or LangGraph) Experience building something from scratch — whether a side project, startup, or open-source app Tech Stack Frontend: React, TypeScript, Next.js Backend: Node.js, GraphQL Database & Cloud: Postgres, AWS Why More ❯

system. Expert in MCP and RAG patterns. Design and build robust data and ingestion pipelines, integrate vector databases, and RSG. Expert-level proficiency in Python and key ML libraries (Langchain, Semantic Kernel, PyTorch, TensorFlow). Hands-on experience with cloud platforms (Azure, AWS) and infrastructure-as-code (Terraform, ECS). Strong background in deploying models via APIs, containers, or cloud … up AI functions Qualifications Minimum 5 years’ professional experience in AI, ML, or applied machine learning engineering roles. Required Skills Expert-level proficiency in Python and key ML libraries (Langchain, Semantic Kernel, PyTorch, TensorFlow). Hands-on experience with cloud platforms (Azure, AWS) and infrastructure-as-code (Terraform, ECS). Strong background in deploying models via APIs, containers, or cloud More ❯

system. Expert in MCP and RAG patterns. Design and build robust data and ingestion pipelines, integrate vector databases, and RSG. Expert-level proficiency in Python and key ML libraries (Langchain, Semantic Kernel, PyTorch, TensorFlow). Hands-on experience with cloud platforms (Azure, AWS) and infrastructure-as-code (Terraform, ECS). Strong background in deploying models via APIs, containers, or cloud … up AI functions Qualifications Minimum 5 years’ professional experience in AI, ML, or applied machine learning engineering roles. Required Skills Expert-level proficiency in Python and key ML libraries (Langchain, Semantic Kernel, PyTorch, TensorFlow). Hands-on experience with cloud platforms (Azure, AWS) and infrastructure-as-code (Terraform, ECS). Strong background in deploying models via APIs, containers, or cloud More ❯

you You fix problems first, explain later You care about systems, performance, and user experience You want to build something that reshapes an industry Tech snapshot TypeScript • Next.js • AWS • LangChain • AI-integrations Typescript specialist is the main focus Bonus points? You've been a past founder You've been a founding Engineer before What you get Up to £170k + More ❯

experience in software development Track record building small tools, scripts, or data products that improve ops. Proven hands-on experience with AI tools (e.g. building GPT-based apps, using LangChain, or integrating APIs) Experience working in digital agencies, consultancies, or dev partners What's in it for you: 💰Salary: £70,000-£90,000 📍Location: London (Hybrid) 📈Autonomous position with huge More ❯

experience in software development Track record building small tools, scripts, or data products that improve ops. Proven hands-on experience with AI tools (e.g. building GPT-based apps, using LangChain, or integrating APIs) Experience working in digital agencies, consultancies, or dev partners What's in it for you: 💰Salary: £70,000-£90,000 📍Location: London (Hybrid) 📈Autonomous position with huge More ❯

Lead AI Research Engineer Central London | £90,000–£120,000 + benefits | Hybrid (WeWork + Remote) This isn’t just another AI job. It’s the chance to build an AI Lab inside one of the UK’s most forward More ❯

Lead AI Research Engineer Central London | £90,000–£120,000 + benefits | Hybrid (WeWork + Remote) This isn’t just another AI job. It’s the chance to build an AI Lab inside one of the UK’s most forward More ❯