I will build a custom ai chatbot or ai agent with openai and rag

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Saif Ur Rehman

About this gig

Need an AI chatbot that actually understands 

your business and your customers?


I'm Saif, a Senior AI Engineer with 5+ years 

building production-grade AI systems using 

OpenAI, LangChain, and RAG architecture.


WHAT YOU GET:

- GPT-4 powered custom chatbot

- RAG architecture trained on YOUR data

- Vector database (Pinecone/ChromaDB/FAISS)

- FastAPI backend with REST endpoints

- AWS Lambda serverless deployment

- PDF, URL, or document ingestion

- Custom personality and tone tuning

- Full source code and documentation


MY AI PROJECTS:

- AI HR System: RAG + OpenAI + FastAPI

- Real-time voice transcription (AssemblyAI)

- Marketing automation AI (Matos AI)


TECH STACK:

OpenAI API | LangChain | RAG | Pinecone

FastAPI | Docker | AWS Lambda | Python


MESSAGE ME BEFORE ORDERING

Let's discuss your use case and I will 

recommend the best approach for you.

Get to know Saif Ur Rehman

Saif Ur Rehman

AI Chatbot, Automation and Full Stack SaaS Developer

  • FromPakistan
  • Member sinceApr 2026
  • Languages

    English
I build AI agents, chatbots and automations that save businesses real hours. 5+ years as a Senior Full Stack and AI Engineer for US and EU companies, including healthcare analytics used by 200+ US hospitals and a research platform scaled to 5,000+ daily users. I help with: - AI chatbots and agents (RAG, OpenAI, Claude, Gemini) - n8n, GoHighLevel, Make and API automation - Web scraping and data pipelines - SaaS apps (Django, FastAPI, Node, React, Next.js) on AWS Clear updates, clean code, on-time delivery. Message me before ordering.

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