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English
$
USD
I will fix mern stack bugs, patch security issues, and optimize code
Rahul km
About this gig
Title: I will fix MERN stack bugs, secure your app, and optimize performance
About This Gig
Are you struggling with bugs, slow performance, or security warnings in your MERN stack application?
I am a MERN Stack Developer with a specialized focus on Cybersecurity. Unlike generic developers who only patch the code, I analyze the root cause to ensure your application is secure, optimized, and error-free.
Whether it is a React frontend crash, a Node.js API failure, or a database connection issue, I can fix it efficiently while protecting your app from vulnerabilities.
My Services:
- Bug Fixing: Troubleshooting React.js, Node.js, Express, and MongoDB errors.
- Security Patching: Protecting against XSS, SQL Injection, and data breaches.
- API Debugging: Fixing 500 server errors, CORS issues, and broken endpoints.
- Performance: Optimizing code and database queries for faster load times.
- Deployment Support: Fixing issues with Heroku, Vercel, or AWS deployment.
Why Choose Me?
- Security-First Mindset: I don't just fix; I protect.
- Clean Code: I write maintainable and comment-rich code.
- Fast Turnaround: Priority delivery available.
️ Tech Stack: React.js, Node.js, Express.js, MongoDB, Redux, JWT Aut.
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 Rahul km
Rahul km
Cybersecurity Expert , Secure MERN Stack Developer, Fixing Bugs, Securing Data
- FromIndia
- Member sinceOct 2025
Languages
Hindi, English
Hi, I’m Rahul. I’ve been coding and diving into cybersecurity for over 4 years. I focus on building secure MERN stack apps—I don't just build features, I find bugs and patch security gaps that others miss.
I help with:
MERN Stack Dev (React, Node.js)
Bug Fixing & Logic Errors
Malware Removal & Web Security
Data Recovery & Database Fixes
I value honest communication and quick fixes. If you’re dealing with a frustrating bug or need a secure site, just send a message. I’m always happy to take a look!
My Portfolio
FAQ
What do you need to get started?
I need access to your source code (GitHub/GitLab repo) and a brief description of the bug or error you are facing. If there are any server logs or screenshots, that helps too!
Can you fix bugs on a live website?
Yes, I can. However, to prevent any downtime, I recommend working on a staging/test environment first before pushing changes to the live site.
Is my code safe with you?
Absolutely. As a professional, I adhere to strict privacy standards. Your code and data will never be shared with anyone and will be deleted from my system after the order is complete.
Do you provide a security report?
Yes! In my Premium Package, I provide a detailed PDF report listing the vulnerabilities I found and how I fixed them to secure your application.
