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$
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I will fix bugs in your mern stack web application
Abdullah Anis
About this gig
Looking for a professional MERN Stack developer to fix bugs in your web application?
I can quickly identify and resolve issues in your React.js, Node.js, Express.js, and MongoDB application. Whether it's a frontend bug, backend error, API issue, authentication problem, or database conflict, I'll provide a clean and reliable solution.
What I Can Fix:
React.js UI & Component Issues
Node.js & Express.js Errors
MongoDB & Mongoose Issues
REST API Bugs
Authentication & JWT Problems
CRUD Functionality
Frontend & Backend Integration
Performance Optimization
Deployment Issues
Why Choose Me?
Fast Bug Resolution
Clean & Maintainable Code
Reliable Communication
Full Source Code Included
Post-Fix Support
Please contact me before placing your order so we can discuss your issue and choose the best solution.
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 Abdullah Anis
Abdullah Anis
Full Stack Developer
- FromPakistan
- Member sinceJun 2026
Languages
Urdu, English
Hi, I'm Abdullah, a Full Stack Developer specializing in MERN Stack and ASP.NET Core MVC. I build ecommerce platforms with secure authentication, shopping cart and order management, and admin dashboards — along with custom business solutions tailored to your requirements. I also integrate AI-powered features into applications where they add real value. I focus on writing clean, maintainable code and delivering projects on time with clear communication throughout. Whether you need a new application, bug fixes, or feature enhancements, I'm here to help turn your ideas into reliable software.
My Portfolio
FAQ
Q: What MERN technologies do you support?
A: React.js, Node.js, Express.js, MongoDB, REST APIs, Authentication Systems, and Database Integration.
Q: Can you fix authentication and login issues?
A: Yes, I can troubleshoot JWT, session-based authentication, authorization, and login/register issues.
Q: Can you fix API errors?
A: Yes, I can debug API routes, controllers, middleware, and database integration problems.
Q: Do you provide source code?
A: Yes, all fixes are delivered with updated source code.
Q: How long does debugging take?
A: Basic package: 1 day. Standard package: 1 day. Premium package: 2 days. Most bugs are fixed within 24 hours.
Q: What if the bug is more complex than expected?
A: Contact me BEFORE ordering. Send me the details, and I'll assess it honestly and recommend the right package.
Q: Do you provide explanations for the fixes?
A: Absolutely! For every fix, I provide code explanations, how the fix works, and how to prevent similar bugs in the future.
