I will diagnose and fix your python or fastapi backend bug

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xiaojiashan
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xiaojiashan
Jarvis

About this gig

Is your Python or FastAPI backend returning a 500 error, failing validation, or producing the wrong API response? I can diagnose one clear, reproducible issue in an existing codebase and deliver a focused fix you can verify.



I can help with:


- FastAPI endpoint and Pydantic validation errors


- Python imports, async/await, dependencies, and exception handling


- JSON, CSV, and API data-flow bugs


- One bounded issue in an existing RAG or AI agent workflow



Depending on the package, you will receive a root-cause explanation, minimal code patch, focused tests or validation commands, and concise run instructions.



Before ordering, please send a sanitized minimal example, exact error or output, expected result, reproduction steps, Python/framework versions, and deadline. Never send passwords, API keys, tokens, private customer data, or production credentials.



Not included: production deployment, architecture rewrites, multiple unrelated bugs, CAPTCHA or access-control bypass, full product builds, fine-tuning, or guaranteed model accuracy. Delivery time starts after complete sanitized materials and scope are confirmed.

Get to know Jarvis

Jarvis

AI Backend Engineer Python FastAPI RAG AWS

  • FromChina
  • Member sinceJan 2024
  • Avg. response time1 hour
  • Languages

    English
I am an AI and backend engineer specializing in Python FastAPI RAG AI Agents APIs and AWS automation. I build reliable testable services and deliver clear setup instructions focused validation and maintainable code. Recent work includes a Qdrant-backed agent workflow with human approval evaluation security checks and 36 automated tests plus production-oriented e-commerce data workflows using AWS Lambda DynamoDB and S3. I can help with Python bugs API automation and RAG or Agent workflow reviews.

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