Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix bugs in your vibe coded react and python web app
Sajjad Ali
About this gig
Stuck with bugs in your React, Next.js, or vibe-coded app (Replit, Lovable, Bolt, Cursor)? I find and fix them fast with clean, working code and no shortcuts.
I specialize in debugging full-stack apps, including React/Next.js frontends, Python (Django/FastAPI) backends, and AI-integrated applications.
What I fix:
- Console errors, crashes, and broken UI
- API and backend logic errors
- Authentication, database, and state management bugs
- Performance issues slowing your app
- AI/LLM integration bugs (OpenAI, Gemini, Claude)
Why choose me?
- 2+ years of production experience with Django, FastAPI, and React
- Built and shipped real AI and backend systems, not just tutorials
- Fast, clear communication. I explain the fix, not just apply it
- On-time delivery, every time
Send me your error or repository, and I'll tell you what's wrong before you order.
Let's get your app running smoothly again!
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Sajjad Ali
Sajjad Ali
Building production ready AI systems for real businesses
- FromPakistan
- Member sinceDec 2019
- Avg. response time1 hour
- Last delivery6 years
Languages
Urdu, English
I'm Sajjad, a Full Stack AI Developer with 2+ years of experience building AI-powered web applications, scalable backend systems, and modern full-stack solutions. I specialize in Python, React, Next.js, Django, FastAPI, AI integrations, Voice AI, and cloud-based applications. I focus on clean architecture, maintainable code, and reliable production-ready solutions while ensuring clear communication and timely delivery.
My Portfolio
FAQ
What types of bugs can you fix?
I can fix frontend, backend, and full-stack issues, including React, Next.js, Django, FastAPI, API integration, authentication, database, state management, performance problems, and AI integration bugs involving OpenAI, Gemini, or Claude.
My app was built using AI tools like Cursor, Replit, Lovable, or Bolt. Can you fix it?
Yes. I regularly work with AI-generated and vibe-coded projects. Whether your code was written by AI or manually, I'll identify the root cause and provide a reliable fix.
What do you need to get started?
Please provide a description of the issue, the error message or screenshots, and access to your code through GitHub, a ZIP file, or your preferred method. If the issue is deployment-related, I'll also need access to your hosting platform if required.
Do you work with databases?
Yes. I can troubleshoot and fix issues related to PostgreSQL, MySQL, SQLite, database queries, migrations, relationships, and backend data handling.
Can you deploy or update my application?
Yes. I offer deployment assistance as an extra service for platforms such as Vercel, Railway, Render, AWS EC2, and other supported hosting providers.
Do you optimize performance and clean up code?
Yes. I offer responsive UI fixes, performance optimization, and code refactoring as an extra service to improve maintainability and application performance
Should I contact you before placing an order?
Yes. If you're unsure which package fits your issue or your bug is complex, send me a message first. I'll review the problem and recommend the best option before you place an order.
