I will build rag chatbot, custom ai agent and multi agent system on your data


About this gig
Most AI chatbots impress in a demo and get switched off within a month. The failure is always the same: the bot invents an answer, and nobody trusts it again.
I build the other kind. Answers come from your content, with sources. When it doesn't know, it says so and takes the visitor's details instead of guessing.
I'm Usama, CTO of a senior engineering team. We run a live chatbot platform in production, built a multi-agent system with a five-engineer backend team, and shipped agents for an Australian HR platform that guide practitioners through a 12-step workplace investigation with human approval at every step. Our clients include the Head of AI at Macquarie University.
What you get
- RAG chatbot trained on your docs, website, database or CSVs
- Grounded answers with sources, chat memory and streaming replies
- Tool-calling agents that act through your APIs, not just answer
- Deployment, documentation and a private test link before launch
Stack: LangChain, LangGraph, Python, FastAPI, pgvector or Chroma, with OpenAI, Claude, Gemini or open models.
Message me before ordering. You'll get an honest scope, timeline and price in writing before you commit.
Get to know Usama Arif
Building web, mobile and AI products for startups and SaaS founders
- FromPakistan
- Member sinceAug 2022
- Avg. response time1 hour
- Last delivery12 months
Languages
English, Spanish, French, German, Dutch
My Portfolio
FAQ
Will it make things up?
That is the failure I design against. The assistant answers only from your approved content and cites sources. When it can't find an answer it says so and captures the visitor's details instead. You test this on a private link before launch.
What can you train it on?
Website pages, PDFs, Word docs, Notion, Google Docs, spreadsheets, CSVs, or a live database. If your content sits behind an API, I can pull from that too. We agree the sources during scoping.
Can it do things, or only answer questions?
Both. Standard and Premium include tool-calling agents that book, look up, update records and trigger workflows through your APIs. Sensitive actions get a human approval step before they run.
Which models can I use, and what about privacy?
OpenAI, Claude, Gemini, or open-source models running on your own infrastructure. If your data can't leave your environment, we use the open-model route. I'll tell you which fits your case and budget.
Do I own the code?
Yes. Source code, keys, vector database and content stay with you. I deploy to your infrastructure or mine, your choice, and hand over documentation so your team can run and extend it.
Can it work on WhatsApp and Slack too?
Yes. The AI core is built once and deployed to multiple front-ends sharing the same knowledge and memory. Website widget, WhatsApp, Slack and mobile can all run off it.
Is this production or a demo?
Production. I handle deployment, error handling, streaming, logging and documentation. We run a chatbot platform in production ourselves, so the failure modes are familiar ones.
I'm not sure what I need. Can you scope it?
Message me with a short description of the problem. You'll get an honest assessment, a written scope, timeline and price before you commit. If it's not worth building, I'll say that.
2 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
I 
iggygullstrand

Sweden
Ongoing collaborationReally appreciate the thouroghness and flexibility on this assignment!
$200-$400
Price
8 weeks
Duration
U 
Seller's Response
Helpful?I 
iggygullstrand

Sweden
Ongoing collaborationFanstastic first work with Usama. He and his collegue helped evaluate our new platform and went above and beyond to accomodate from our needs by not only giving us bug reports, but also invaluable feedback on how we can make the site better.
$100-$200
Price
2 weeks
Duration
U 
Seller's Response
Helpful?
2 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
I 
iggygullstrand

Sweden
Ongoing collaborationReally appreciate the thouroghness and flexibility on this assignment!
$200-$400
Price
8 weeks
Duration
U 
Seller's Response
Helpful?I 
iggygullstrand

Sweden
Ongoing collaborationFanstastic first work with Usama. He and his collegue helped evaluate our new platform and went above and beyond to accomodate from our needs by not only giving us bug reports, but also invaluable feedback on how we can make the site better.
$100-$200
Price
2 weeks
Duration
U 
Seller's Response
Helpful?
