AI & LLM Engineering · From $1,000

AI Chatbot Development
LangChain · RAG · OpenAI

I build production AI chatbots — not prototypes. Using LangChain, OpenAI GPT-4o, and RAG pipelines, I've shipped document-grounded chatbots for fintech clients in the UK that handle real users, respect API budgets, and integrate into existing React applications.

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What I Build

Common use cases I've delivered or can deliver for your business.

Customer Support Chatbot

Answers questions from your docs, FAQs, and policies. Escalates to humans when needed.

Internal Knowledge Assistant

Lets your team query internal wikis, SOPs, and reports in plain English.

Sales Qualification Bot

Qualifies leads, answers product questions, books meetings — 24/7 without a rep.

Document Q&A System

Upload PDFs, contracts, or research papers and query them conversationally.

Technology Stack

LangChainChain orchestration, memory, agents
OpenAI GPT-4o / 4o-miniLanguage model — balanced cost vs quality
Pinecone / pgvectorVector database for document retrieval
Vercel AI SDKStreaming responses to React frontend
React / Next.jsChat UI with real-time token streaming
RedisSession memory across conversations

What's Included in Every Project

Working chatbot deployed to production (not just a demo)
RAG pipeline connected to your documents, PDFs, or knowledge base
Streaming token UI — feels like ChatGPT, not a loading spinner
Conversation memory with configurable window (no runaway token costs)
Admin controls to update the knowledge base without a redeployment
Cost monitoring — per-session token limits so you never get a surprise bill
Full source code, documentation, and 30-day support included

Remote Service — Worldwide

I work async-first with clients in all major timezones. Current and past clients in:

United KingdomUnited StatesNorwayNetherlandsGermanySwedenDenmarkSwitzerlandAustraliaCanadaFinlandBelgium

Ready to build your AI chatbot?

Tell me about your use case. I'll give you an honest scope, timeline, and cost — usually within a few hours.

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Also see: MERN Development · Next.js Development