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Fiverr Pro
English
$
USD
I will review your python react codebase, fix bugs and audit ai vibe coded app
Serafim
About this gig
Vibe-coded your app with Bolt, Lovable, Replit or Cursor and now it's broken, buggy, or just won't work? I fix it.
I'm a senior full-stack developer who specializes in reviewing, auditing, and fixing code written by AI tools (Bolt.new, Lovable, v0, Cursor, ChatGPT, Claude). I understand how AI generates code where it fails, what it skips, and how to make it production-ready.
WHAT I REVIEW & FIX:
Critical bugs & broken logic in React / Next.js / Python / FastAPI
AI-generated spaghetti code that stopped working
Security vulnerabilities (exposed APIs, missing auth, SQL injection)
Performance issues & slow queries
Failed Supabase / Firebase / PostgreSQL integrations
Broken payment flows (Stripe, Paddle)
Authentication errors (NextAuth, Clerk, JWT)
Backend API bugs & missing error handling
Pre-launch or pre-investment technical audit
YOU GET:
Written bug report with all issues found
Fixed, clean, refactored code
Recommendations to prevent future issues
PERFECT FOR:
Startups before investor demo or launch
Non-devs who vibe-coded an MVP
Founders who hired cheap devs and got messy code
Anyone stuck at "it almost works"
Message me before ordering I'll confirm I can help within 1 h
Get to know Serafim
Serafim
Full Stack Developer, Web and Mobile Apps, AI Solutions, Psychology Driven UX
- FromBelarus
- Member sinceSep 2021
- Avg. response time1 hour
- Last delivery4 years
Languages
Russian, English
I combine 8 years of software engineering with a formal Psychology degree to build digital products that don't just work, they convert, retain, and delight users.
I've shipped 50+ projects: SaaS platforms, AI-powered apps, fintech dashboards, and viral mobile apps with 1M+ downloads.
Stack: React, Next.js, Flutter, FastAPI, Python, Node.js, OpenAI, AWS.
Specialty: Psychology-driven UX/UI that turns visitors into loyal customers.
Deadlines are sacred. Quality is non-negotiable. Let's build.
My Portfolio
FAQ
Can you review code written by AI tools like Cursor, ChatGPT, or Bolt.new?
Yes! That's my specialty. AI-generated code often has hidden bugs, security gaps, and architectural issues. I'll audit it thoroughly, fix critical problems, and make it production-ready.
What tech stacks do you support?
I specialize in Python (FastAPI, Django, Flask), React, Next.js, Node.js, and PostgreSQL/MongoDB. I also review full-stack apps, REST APIs, and microservices architectures.
My app was built with vibe coding tools and it's broken — can you fix it?
Absolutely. I work with vibe-coded apps daily. I'll diagnose the root cause, fix the bugs, clean up the code structure, and document what was wrong so you understand your own codebase.
I need a code audit before investor demo / product launch. Can you help?
Yes, this is exactly the use case I love. I'll run a pre-launch audit covering security, performance, and code quality, then give you a clear report to share with investors or your team.
How do I share my code with you?
Via GitHub repo, ZIP archive, or direct file upload in the Fiverr order chat. I keep all code strictly confidential and can sign an NDA on request.
