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Fiverr Pro
English
$
USD
I will build an agentic rag system using openai and langgraph
Ducan Nguyen
About this gig
Stop building generic "Chatbots". Start building Intelligent AI Workforces.
Are you tired of AI that hallucinations or costs a fortune in OpenAI API fees? I am an AI Engineer specializing in Agentic RAG and LLM Optimization. I don't just wrap ChatGPT; I engineer systems that think, act, and save you money.
What I Bring to the Table:
- Cost-Effective AI: I migrate expensive GPT-4 workflows to DeepSeek-V3/R1 or Llama 3, cutting your API costs by up to 90% while maintaining top-tier reasoning.
- Advanced Agentic RAG: Using LangGraph & CrewAI, I build multi-agent systems that can research the web, analyze complex PDFs/CSVs, and execute tasks autonomously.
- Enterprise-Grade Accuracy: Zero-shot implementation and fine-tuning (Flan-T5/Mistral) to ensure the AI understands your specific business domain (Web3, Finance, Legal, etc.) without making things up.
My Tech Stack:
- Frameworks: LangChain, LangGraph, CrewAI, DSPy.
- Models: DeepSeek-R1, GPT-4o, Claude 3.5, Llama 3 (Fine-tuning).
- Vector DB: Pinecone, Weaviate, Qdrant.
Don't settle for average. Click "Contact Me" now, and let's discuss how to automate your business with the next generation of AI.
Get to know Ducan Nguyen
Ducan Nguyen
AI Engineer NLP Expert
- FromVietnam
- Member sinceJan 2026
- Last delivery3 months
Languages
English
I'm an AI/ML Engineer specializing in scalable Agentic Systems, RAG, and Physics-informed ML. With a strong math background (VPhO Silver Medalist) and production experience in AgTech & Web3, I don't just code—I build solutions.
My expertise:
• GenAI: Fine-tuning SLMs, Multi-agent systems.
• Engineering: FastAPI, Docker, Microservices.
• Domains: DeFi automation & Control systems.
Need a custom chatbot, complex AI workflow, or robust ML backend? Let’s turn your idea into reality.
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FAQ
Do you offer a consultation before I order?
Yes, absolutely! I provide free technical consulting exclusively via Fiverr messages. Just send me a brief description of your project and data sources. I will analyze your needs and suggest the best AI architecture for you.
Can your AI Agents perform actions, or do they just chat?
They are fully actionable Agents. Using frameworks like LangGraph or CrewAI, I build agents that can execute workflows: query databases, scrape real-time web data, analyze crypto/financial charts, or interact with your internal APIs. Think of them as "digital employees," not just chat windows.
Do you provide source code and deployment support?
Yes. Unlike many sellers who only give you an API endpoint, I provide the Full Source Code. For Standard and Premium packages, I deliver the solution in a Docker container for easy deployment on AWS, GCP, or Azure, along with a technical document guiding you on how to maintain and scale it.
