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Fiverr Pro
English
$
USD
I will build an ai agent or multi agent system using langchain langgraph fastapi
Navid
About this gig
Need an AI Developer for a custom AI agent, multi-agent system or intelligent automation built for your business?
I'm a Full Stack AI Developer with 5+ years building production-ready AI agents, LLM workflows and RAG pipelines using LangChain, LangGraph, CrewAI and FastAPI for startups and businesses that want real automation, not just demos.
What I build:
- Custom AI agents for web, WhatsApp & voice
- Multi-agent systems with LangGraph & CrewAI
- RAG pipelines with vector DBs (Pinecone, Chroma)
- LLM workflows with OpenAI, Claude & Gemini
- N8n & MCP automation integrations
- AI-powered APIs with Python FastAPI
- Generative AI features (text, image, voice)
- Conversational AI & customer support agents
️Stack: LangChain, LangGraph, CrewAI, FastAPI, OpenAI, Claude, Gemini, Groq, Pinecone, MongoDB, PostgreSQL, Redis, AWS, GCP, Railway
Why choose me:
- Production-grade agents, not simple chatbots
- Clean, scalable architecture built to last
- Fast communication & NDA-friendly
Message me first describe your workflow and I'll reply with scope, timeline and cost.
Get to know Navid
Navid
AI Developer, Full stack AI Developer
- FromIndia
- Member sinceMar 2017
- Avg. response time1 hour
- Last delivery2 weeks
Languages
Hindi, English, Urdu
I’m a Full stack AI Developer with 5+ years of professional experience. I started my professional career with freelancing on Fiverr and later spent 4 years working with two Web3 startups. I build modern web & mobile apps using React, React Native, Node.js, & TypeScript. I also specialise in AI development with Python, FastAPI, LangChain, and LLMs like ChatGPT & Claude. I support projects end-to-end, from consultation and planning to development, deployment, and long-term maintenance. I focus is on stability, performance, clear communication, and long-term technical reliability of the product.
FAQ
What is an AI agent and do I need one?
An AI agent is software that uses LLMs to autonomously complete tasks - browsing, deciding, and acting without constant human input. If you want to automate a workflow or process, you likely need one. Message me and I'll advise for free.
What's the difference between a chatbot and an AI agent?
A chatbot answers questions. An AI agent takes actions, it can search the web, read emails, update databases and trigger other tools automatically. I specialize in agents, not basic chatbots.
Which LLMs do you work with?
OpenAI (GPT-5.5), Anthropic Claude, Google Gemini and Groq. I'll recommend the best model for your use case and budget during our initial discussion.
Can you build a RAG system for my documents?
Yes. I build RAG pipelines that let your AI agent answer questions from your own PDFs, docs or databases using Pinecone, Chroma or Weaviate as the vector store.
Do you integrate with existing tools like N8n or Zapier?
Yes. I integrate AI agents with N8n, MCP servers and custom APIs. So your agent fits into your existing business workflow seamlessly.
