I will fix python or javascript bugs in your code within 24 hours

Canada

I speak English, Chinese

AI Developer Chatbots Automation Workflows Code Review

I build production-ready AI systems—chatbots, automation workflows, and reliable code—for businesses that need outcomes, not demos. Background: Working extensively with modern developer tools (Cursor...
About this Gig

Your code is broken at 2am. You don't have time to figure out why. I do.


What I fix:

- Python (FastAPI, Flask, Django, data scripts)

- JavaScript / TypeScript (Node, Next.js, React)

- Performance issues (slow queries, N+1, memory leaks)

- Security smells (exposed keys, SQL injection, missing auth)

- AI / LLM apps niche specialty (RAG, prompt regressions, agent loops, OpenAI / LangChain / Claude API)

- AI-generated ("vibe-coded") apps fix what Cursor / Lovable / Bolt / Replit / v0 produced


Recent fixes:

- FastAPI websocket leak crashing at 200 concurrent users fixed in 2h

- Next.js hydration error blocking checkout solved in single delivery

- LangChain RAG returning irrelevant chunks root-caused to bad chunk overlap


What I deliver:

1. The fix (working code, tested locally)

2. Written explanation of WHY it broke

3. Recommendations to prevent recurrence


What I don't do:

- New features from scratch (separate gig)

- CSS / pixel-pushing

- Mobile native (iOS/Android)

- Production DB access (I work from logs/snippets)


Before ordering, share: the error or expected-vs-actual, the relevant code (paste or GitHub), ste

Development technology:

Python

Expertise:

Algorithmic

Clean Code

Code efficiency

Design patterns