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$
USD
I will fix, optimize, or refactor your next js, react app
Web Development Wizard with MERN Magic
👋 Hi, I'm a Full-Stack Web Developer specializing in MERN Stack, Next.js, and WordPress Plugin Development.
With 7+ years of experience, I build fast, secure, and scalable web applications for real-...
About this Gig
I will fix, optimize, or refactor your existing Next.js or React web application using Supabase or MongoDB, and make it stable, fast, and production-ready.
If your project has bugs, errors, performance issues, broken APIs, or poorly structured backend logic, I can help you clean it up and move forward safely. This service is designed for existing web applications, not new builds.
What I can help with:
- Fix Next.js or React bugs and errors
- Debug Supabase or MongoDB issues
- Repair broken API routes
- Improve database structure and queries
- Optimize performance and loading speed
- Refactor messy or hard-to-maintain code
- Prepare the app for production or deployment
I work carefully on existing codebases, explain what is fixed, and focus on long-term stability, not quick hacks.
This gig is ideal for unfinished projects, apps built by other developers, or systems that need professional maintenance and optimization.
My Portfolio
FAQ
Q1: Can you fix an existing Next.js or React project built by another developer?
Yes. I regularly work on existing projects, including unfinished or poorly structured apps built by others.
Q2: What types of issues can you fix?
I can fix bugs, errors, broken APIs, database issues, performance problems, and refactor messy or unstable code.
Q3: Do you work with Supabase or MongoDB backends?
Yes. I can debug, optimize, and refactor projects using Supabase (PostgreSQL) or MongoDB.
Q4: Will my website be functional after your work?
Yes. The goal of this service is to deliver a stable and functional web application based on the selected package.
Q5: Will you explain what was fixed or improved?
Yes. I clearly explain the issues found and the solutions applied after completing the work.
Q6: Can you improve performance and code quality?
Absolutely. Performance optimization and clean, maintainable code are a key focus of this gig.
Q7: Do you provide deployment or production support?
Basic guidance is included. Advanced deployment support can be provided via a custom offer.
Reviews
1 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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V visettan
Germany
Good work. Very fast, has an understanding of Value.
$200-$400
Price
8 days
Duration
A 
Seller's Response
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
V visettan
Germany
Good work. Very fast, has an understanding of Value.
$200-$400
Price
8 days
Duration
A Seller's Response
Helpful?
