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Fiverr Pro
English
$
USD
I will fix next js and mern bugs API errors and deployment issues
Annie K
About this gig
Your web application does not need another temporary patch. It needs the right diagnosis and a solution that works.
I diagnose web problems and deliver practical, scalable solutions for Next.js and MERN applications.
I can help with:
- Next.js, React, JavaScript and TypeScript errors
- Node.js, Express, REST API and MongoDB issues
- Authentication and authorization bugs
- Third-party API integration problems
- Responsive UI and frontend behavior
- Build, environment variable and Vercel deployment errors
- Broken, unfinished or AI-generated code
My process:
- Understand the expected result
- Reproduce and diagnose the issue
- Recommend the right solution
- Implement and test the fix
- Deliver a clear change summary
The Basic package covers one small, clearly defined issue. New features, redesigns, architecture changes and unrelated bugs require a custom offer. Please contact me before ordering a complex or production-critical issue.
Get to know Annie K
Annie K
Mobile App Developer
- FromPakistan
- Member sinceJul 2026
- Avg. response time1 hour
Languages
Urdu, English
With 3+ years of experience in Flutter app development, I help early-stage startups and businesses build apps that actually convert and scale. Whether you need an app built from scratch, an existing app debugged and fixed, or a working app scaled for growth I handle the full cycle, all the way to deployment. Clean architecture, production-ready code, and real experience delivering for international healthcare and e-commerce clients.
My Portfolio
FAQ
What counts as one issue?
One issue is one reproducible problem with one expected outcome. Several unrelated errors, pages or features are separate issues.
Which technologies do you work with?
I support Next.js, React, JavaScript, TypeScript, Node.js, Express, MongoDB, REST APIs and Vercel. Please message me first if your project uses additional frameworks or services.
Can you fix AI-generated or unfinished code?
Yes, provided the project can be accessed and the problem can be isolated. Heavily generated or poorly structured code may require a paid review or custom offer
Do you need source code access?
Usually yes. Please provide repository access or project files, a safe working branch and any temporary test credentials required to reproduce the issue.
Can you work on a live production application?
Yes, but production-critical work must be discussed before ordering. A current backup or staging environment is required whenever the change carries meaningful risk.
