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I will fix python fastapi bugs and rest API integration errors
Toan V
About this gig
Is a Python API error blocking your app? I will investigate and fix a clearly defined issue in your FastAPI or Flask backend.
I have 4+ years of software engineering experience, working with Python APIs, PostgreSQL, background jobs and AI integrations.
Basic: one reproducible bug in one endpoint.
Standard: up to three related bugs in one service, with regression tests.
Premium: repair one existing REST API integration across up to three endpoints, with tests and a Docker run guide.
Every package includes the updated source code, verification steps and a short explanation of the fix. Revisions cover the agreed issue; new features are separate scope.
Please message me before ordering with the error, reproduction steps, stack versions and relevant code. Remove secrets and personal data from samples. Major rewrites, new integrations, security audits and cloud deployment require a separate quote. API and hosting charges are not included.
Get to know Toan V
Toan V
Python API Fixes, RAG Chatbots and AI Workflow Automation
- FromVietnam
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, Vietnamese
Need to fix a broken Python API, turn PDFs into a chatbot, or automate a manual workflow? I build with FastAPI, Flask, LangChain, LangGraph, PostgreSQL and Docker. With 4+ years in software engineering and production AI experience since 2024, I have worked on CRM agents, document extraction and travel search. I can deliver a focused bug fix, a document Q&A prototype or a scoped API integration, with tested source code and setup instructions. Message me with your goal, current stack and sample input so we can agree on scope and delivery.
FAQ
What is included in a revision?
Adjustments to the agreed fix against the original requirements. New endpoints, features and unrelated bugs require a separate scope. Please message me with reproduction steps before ordering.
Are hosting, API fees and deployment included?
Hosting and third-party API charges are paid by the client. Cloud deployment, new integrations and major rewrites require a separate quote. Every listed package includes updated source code, verification steps and fix notes.
