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English
$
USD
I will debug and fix full stack web application issue
Haseeb
About this gig
I will help debug, fix, and optimize issues in your React.js, Next.js, Node.js, or MERN stack application.
Whether you are facing frontend bugs, backend API issues, responsive design problems, authentication errors, or deployment-related issues, I can help identify and resolve them efficiently.
With 1.5 years of hands-on development experience, I have worked on SaaS, healthcare, education, entertainment, and gaming-related projects involving both frontend and backend development.
Services I Can Help With
- React.js / Next.js bug fixing
- Node.js / Express.js backend issues
- API integration and debugging
- Responsive UI fixes
- Authentication and routing issues
- Redux / Context API state issues
- Database/API connection troubleshooting
- Performance optimization
- Deployment and environment configuration
- Full-stack MERN application debugging
I focus on writing clean, maintainable solutions while ensuring your application works smoothly and efficiently.
Please contact me before placing an order so we can discuss the issue and scope properly.
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 Haseeb
Haseeb
Full Stack Developer, AI Automation, Chatbots and Dashboards
- FromPakistan
- Member sinceJan 2023
- Avg. response time1 hour
Languages
Urdu, English
I build admin dashboards and full-stack web apps that hold up in production, plus the AI layer on top: n8n automations that run your busywork, and chatbots trained on your own docs.
In 2 years I have shipped 5 live systems: analytics portals with role-based access, real-time monitoring dashboards, automated PDF reporting and bulk data import.
Stack: React, Next.js, TypeScript, Node, NestJS, Django, FastAPI, PostgreSQL, MongoDB, plus OpenAI, Claude and Gemini.
Scope confirmed in writing before you order, full source in your own repo. Reply time: 1 hour.
My Portfolio
FAQ
What kind of bugs can you fix?
I can help with frontend, backend, API integration, authentication, responsive design, routing, deployment, and MERN stack-related issues.
Do you work on existing codebases?
Yes, I can work on existing React.js, Next.js, Node.js, and MERN stack applications.
Can you fix API or backend-related issues?
Yes, I have experience working with REST APIs, Node.js, Express.js, and backend integrations.
Can you optimize application performance?
Yes, I can help identify and resolve performance bottlenecks and improve frontend responsiveness and application behavior.
Do you provide responsive design fixes?
Yes, I can fix layout, responsiveness, and UI-related issues across desktop, tablet, and mobile devices.
