I will build custom autonomous ai agents and rag systems with python

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Yujie T

About this gig

Looking for an autonomous AI Agent that executes tools, remembers context, and runs complex workflows?


I am an AI engineer building custom high-performance AI Agents and hybrid RAG systems using Python.


️ What I Can Build For You:

Autonomous Tool-Calling Agents: Custom Python agents equipped with Function Calling, web search, database querying, and code execution.

Resilient Tool Execution: Robust ActionRouter architecture with parameter normalization and autonomous error self-correction.

Hybrid RAG & Long-Term Memory: Combine keyword search with vector embeddings (FTS5, SQLite, Chroma) for zero-hallucination retrieval.

Multi-Model Architecture: Seamlessly integrate Claude 3.7, DeepSeek V4.1, Gemini 3.7, or local open-weights LLMs via Ollama.

Production API Gateway: Asynchronous REST and streaming endpoints built with FastAPI.


Why Work With Me?

Clean, modular, production-grade Python code (asyncio, Pydantic, PEP 8).

Battle-tested engineering with full documentation and test suites.

100% custom-built for your specific business use case.


Please message me before placing an order to discuss your agent architecture!

Get to know Yujie T

Yujie T

AI Agent Developer

  • FromChina
  • Member sinceMay 2020
  • Languages

    English, Chinese, Japanese
I am a Computer Science graduate focused on autonomous AI Agents, LLM-powered applications, and enterprise workflow orchestration. I have extensive experience taking fuzzy business requirements to end-to-end production systems using modern AI-assisted engineering tools like Python, FastAPI, and RAG architectures.

My Portfolio