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Fiverr Pro
English
$
USD
I will fix node js, express, and mongodb backend API bugs
Ashik I.
About this gig
Stop losing users due to login bugs! Let's get your authentication back on track.
Are you facing frustrating login or authentication problems on your MERN stack website? Don't worry! I am a professional MERN Stack Developer, and I will fix your backend and frontend authentication issues quickly and securely.
If you are facing issues like:
- Login or Signup not working
- JWT (JSON Web Token) authentication errors
- Unauthorized (401 / 403) access errors
- Token not saving in LocalStorage/Cookies or expiring too soon
- Protected routes allowing unauthorized users
- Session or Cookie-based auth issues
What I will do for you:
- Fix Node.js & Express middleware authentication bugs
- Debug and fix JWT and Refresh Token flow
- Resolve MongoDB user schema and password hashing issues (Bcrypt)
- Fix React/Next.js private routes and auth state management (Redux/Context API)
- Secure your complete authentication flow against vulnerabilities
Why Choose Me?
- Expert Problem Solver: I specialize in debugging complex MERN issues.
- Clean & Secure Code: I don't just patch; I provide optimized, reusable solutions.
- Fast Communication: Regular updates and quick response time.
- Satisfaction Guaranteed: 100% focus on resolving t
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Get to know Ashik I.
Ashik I.
Mern Stack Developer
- FromBangladesh
- Member sinceDec 2025
Languages
Bengali, English, French, German
Hi, I’m Ashik, a MERN Stack Developer & Problem Solver.
I specialize in building scalable web apps and fixing complex bugs using MongoDB, Express, React, and Node.js. Whether it's a broken API, JWT authentication issue, or a responsive frontend need, I’ve got you covered.
Why hire me?
Expert Debugger: Fast at fixing backend/frontend bugs.
Security Focused: Pro in JWT, OAuth & secure REST APIs.
Quality Code: I write clean, maintainable & optimized code.
I’m dedicated to delivering 100% satisfaction. Let’s discuss your project and fix those bugs today!
My Portfolio
FAQ
How fast can you fix my authentication issue?
It depends on the complexity of the issue. Simple login or signup errors can usually be fixed within 1–2 days. Complex authentication issues may take longer. I always provide clear delivery times before starting.
Do you need access to my code?
Yes, to fix authentication errors, I need access to your project code. You can provide it via GitHub repository, ZIP file, or live site access. This helps me diagnose and resolve the issue accurately.
Can you fix authentication issues for any MERN stack project?
Yes! I work with Node.js, Express, MongoDB, SQL, React, and Next.js projects. If your project uses JWT, sessions, or cookies for authentication, I can fix and optimize it.
What if my issue is not fixed after delivery?
I provide revisions based on your package. If the problem persists, you can request a revision, and I will ensure the issue is fully resolved. Additional revisions are also available at a small extra fee.
Can you improve my authentication security?
Yes! For Premium orders or upon request, I can optimize your authentication flow for better security, including JWT handling, session management, and protected routes.
