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English
$
USD
I will build ai agent, rag chatbot, llm app using langchain, langgraph, openai
Waleed Tahir
Level 2
5.0
5.0
About this gig
100% Refund Guarantee - if I set the wrong expectation and can't deliver, no questions asked.
I'm an AI engineer (3+ years, 15+ RAG chatbots, AI agents & LLM apps shipped) doing production-ready AI & chatbot development for startups, not just API wrappers.
What you get:
- RAG Chatbot: custom AI chatbot for your PDFs, website, Notion, CSV, SQL database
- AI Agents: tools, memory, reasoning - single or multi-agent with LangGraph
- MCP Servers & Custom GPTs: for Claude, ChatGPT, and your own APIs
- AI Automation: n8n workflows, webhooks, CRM & API integration
- AI SaaS / LLM App Development: Next.js, FastAPI, Supabase, auth, billing
Stack: OpenAI, Claude, LangChain, LangGraph, local LLMs via Ollama, vector databases (Pinecone, pgvector, Chroma), hybrid search + re-ranking.
Why me?
- Live demo before delivery: see your chatbot working before you accept
- Deep experience in AI agents, chatbot development & AI integration
- I reply within 15 minutes, 95% of the time
BONUS: Free 30-min consultation, message me now for clear scope & price before you spend anything!
Get to know Waleed Tahir
Waleed Tahir
AI and Full Stack Engineer: AI Agents, AI SaaS MVPs, RAG Chatbots
Level 2
- FromPakistan
- Member sinceJun 2022
- Avg. response time1 hour
- Last delivery4 weeks
Languages
English, Spanish, Portuguese, German
Hey! I'm Waleed, a Full-Stack & AI Engineer.
I help founders turn ideas and rough prototypes into production-ready products people actually use. I build SaaS platforms, AI agents, RAG systems, chatbots, AI voice agents, and custom web applications using Next.js, React, Node.js, Python, LangChain, LangGraph, OpenAI, and Supabase.
I care about clean code, clear communication, and shipping fast without compromising quality. Whether you're validating an MVP or scaling an existing product, I'm here to make the process simple. Let's build something awesome together, send me a message!
My Portfolio
FAQ
Can your RAG chatbot work with my PDFs, website, Notion or SQL database?
Yes. I build custom RAG chatbots with LangChain that ingest PDFs, websites, Notion, CSVs & SQL databases into a vector database (Pinecone, pgvector or Chroma), with hybrid search + re-ranking so your AI chatbot answers accurately from your own data.
Which LLMs do you work with - OpenAI, Claude or local models?
All of them. I build with OpenAI (GPT models), Claude, and local LLMs via Ollama if you need privacy or lower costs. I'll recommend the best LLM for your use case, budget & data sensitivity during the free consultation.
What's the difference between a RAG chatbot and an AI agent?
A RAG chatbot answers questions from your data. An AI agent goes further: it uses tools, memory & reasoning to take actions - book meetings, update your CRM, run workflows. I build both, including multi-agent systems with LangGraph.
Can you integrate the AI chatbot into my existing app or website?
I deliver AI integration via REST API, embeddable widget, or directly in your codebase - Next.js, FastAPI or your stack. Full AI SaaS / LLM app development is also available if you're starting from scratch.
Do you build AI automation with n8n?
Yes. I connect your RAG chatbot or AI agent to n8n workflows, webhooks & your CRM, so the AI doesn't just chat - it triggers real AI automation: lead capture, follow-ups, data sync & more.
How do we start?
Message me for a free 30-min consultation. Tell me your data sources & goal - I'll reply with a clear scope, architecture, timeline & fixed price. You'll see a live demo of your chatbot before you accept delivery.
Reviews
2 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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S salilw
United States
Ongoing collaborationWe thought this task would take weeks because of the large number of users and the complex migration. Yet, Waleed’s team leveraged AI agents for planning and a rapid migration. They also utilized a custom-built CRM, powered by Claude, to confirm that users received and acknowledged their emails.
$100-$200
Price
4 days
Duration
Helpful?K kevin_mch
United States
Ongoing collaborationWaleed was fantastic to work with. He quickly understood our requirements, delivered high-quality work on time, and maintained excellent communication throughout the project. His technical expertise and attention to detail made the entire process smooth. Highly recommended!
$100-$200
Price
12 days
Duration
Helpful?
Reviews
2 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S salilw
United States
Ongoing collaborationWe thought this task would take weeks because of the large number of users and the complex migration. Yet, Waleed’s team leveraged AI agents for planning and a rapid migration. They also utilized a custom-built CRM, powered by Claude, to confirm that users received and acknowledged their emails.
$100-$200
Price
4 days
Duration
Helpful?K kevin_mch
United States
Ongoing collaborationWaleed was fantastic to work with. He quickly understood our requirements, delivered high-quality work on time, and maintained excellent communication throughout the project. His technical expertise and attention to detail made the entire process smooth. Highly recommended!
$100-$200
Price
12 days
Duration
Helpful?
