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Fiverr Pro
English
$
USD
I will fix website bugs, including react bug fix, node js bugs fix
Mustansar H
About this gig
Do you encounter errors or performance problems in your MERN stack project (MongoDB, Express, React, Node.js)?
Worry not I will debug errors, fix bugs, and make your application faster and smoother. ????
- What I can assist you with:
- Repairing frontend issues in React, Next.js, JavaScript, HTML, CSS
- Debugging backend errors in Node.js & Express
- Solving integration issues in your MERN stack
- Optimizing code for improved speed and performance
- Cleaning, refactoring, and optimizing code
- Why hire me?
- Efficient and timely bug fixing
- Clean, optimized, and clearly documented solutions
- Timely delivery with friendly customer support
- 100% satisfaction rate guaranteed
Don't worry about that pesky bug or tricky error; I've got you covered.
Order now, or message me to chat about your problem before placing an order.
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 Mustansar H
Mustansar H
Full Stack MERN Developer React, Nodejs, Express, MongoDB Solutions
- FromPakistan
- Member sinceMay 2025
- Last delivery7 months
Languages
Punjabi, English, Urdu
Hi there!
I'm Mustansar, a passionate MERN Stack Web Developer experienced in building modern, scalable, and responsive web applications using React, Node js, Express, MongoDB, MySQL, Bootstrap, and Tailwind CSS.
Need a landing page, website, admin panel, or full web app? I can build it with a professional finish.
Here’s what I offer:
• Full Stack Web Development (Frontend + Backend)
• API Development using Node and Express
• MongoDB and MySQL Database Integration
• Bug Fixes, Code Optimization & Performance Improvement.
I’m always happy to discuss your project. Just drop me message.
My Portfolio
FAQ
What information do you need from me to start fixing the bug?
I’ll need a clear description of the issue, access to your project files or repository (GitHub, GitLab, etc.), and steps to reproduce the bug.
Can you work with both frontend and backend issues?
Yes, I fix bugs in React, Next.js, JavaScript, HTML, CSS (frontend) and Node.js, Express, MongoDB (backend). I also handle full-stack debugging across the entire MERN stack.
Do you also optimize code performance, or only fix bugs?
I do both! Along with fixing bugs, I can optimize your code for faster load times, cleaner structure, and better performance.
What if I don’t know what the issue is?
No worries, If you only know the symptoms (like app crashes, slow performance, or errors), I’ll investigate, identify the bug, and provide a fix.
Do you provide ongoing support or only one-time fixes?
I offer both. This gig covers one-time bug fixes and performance optimization. If you need long-term maintenance, I also provide website maintenance packages — just message me to discuss.
Will my code remain secure and private?
Absolutely, Your code and project details will remain 100% secure and confidential. I never share client files or information.
