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I will ai engineer to develop ai apps, ai saas, ai website and ai bots
Atta Ur Rehman
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About this gig
Need an AI engineer to develop a custom AI solution for your business? I build production-ready AI agents, RAG chatbots and AI automation that work on your real data, not just in a demo.
I'm an AI Engineer building multi-agent and RAG systems in a regulated banking environment, so security, accuracy and reliability come first.
What I build:
- AI agents & agentic AI workflows (LangGraph, LangChain)
- RAG chatbots trained on your documents, website or database
- OpenAI, Claude & Gemini API integration
- Private local LLMs (Ollama) for data-sensitive businesses
- AI workflow automation & custom AI tools
- NLP: classification, sentiment analysis, document Q&A
- Prompt engineering & LLM output optimization
- FastAPI backends, Docker deployment, web & mobile app integration
Why work with me:
- Production-grade code, not prototypes
- Guardrails, testing & evaluation before delivery
- Clean, documented, maintainable code
- Clear communication & on-time delivery
Ideal for startups, SaaS founders, e-commerce, finance, healthcare and agencies.
Message me before ordering with what you want your AI to do. I'll reply with a clear plan, tech stack and timeline.
Get to know Atta Ur Rehman
Atta Ur Rehman
AI engineer and solution architect for RAG and AI agents
- FromPakistan
- Member sinceJun 2020
- Avg. response time1 hour
- Last delivery1 week
Languages
Urdu, English, Hindi
AI engineer building private RAG systems, AI agents and AI voice receptionists that work in real use, not just in demos.
By day I build AI systems for a regulated bank on private infrastructure, so data privacy, guardrails and audit logging are my defaults. As a freelancer I've built a fully offline document research assistant for an enterprise client and delivered a code audit and recovery plan for an AI business platform.
Stack: Python, LangGraph, LangChain, Qdrant, FAISS, FastAPI, Docker, Ollama, Vapi, Retell, n8n.
Tell me the problem and I'll tell you honestly if AI is the right fix.
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Other AI Development Services I Offer
FAQ
Can you build an AI chatbot trained on my own documents and data?
es. I build RAG chatbots that answer from your PDFs, Word files, website, database or helpdesk content, with sources shown so you can check every answer. Send me a sample of your data and I'll confirm the best approach before you order.
Which LLMs do you work with: OpenAI, Claude, Gemini or open-source?
All of them. I integrate OpenAI, Claude and Gemini APIs, and open-source models (Llama, Qwen, Mistral) via Ollama. I'll recommend the model that fits your accuracy, speed, budget and privacy needs rather than one I prefer.
Can you add AI to my existing app or build a new AI SaaS?
Both. I can connect AI agents, chatbots and automation to your existing app through a clean API, or build a new AI SaaS backend with FastAPI, PostgreSQL and a vector database. Share your current stack and I'll plan around it.
