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I will fix nextjs bugs, react issues, and frontend problems fast
Sejin Ahmed
About this gig
I will fix your Next.js bugs, React issues, and any frontend problems quickly and efficiently.
If your website is broken, slow, not responsive, or showing unexpected errors, I will debug and solve the issues to improve performance and user experience.
I work with modern frontend technologies including React.js, Next.js, TypeScript, JavaScript, MUI, Tailwind CSS, HTML, CSS, and API integrations. I focus on clean code, responsive design, and smooth UI/UX.
What I can help you with:
- Fix React / Next.js / TS / JS errors and bugs
- Resolve UI/UX issues and layout problems
- Fix responsive design issues (mobile/tablet/desktop)
- Debug API and data fetching problems
- Improve performance and loading speed
- Clean and optimize frontend code
I always try to deliver fast and may even complete the work earlier than the estimated delivery time depending on complexity.
Why choose me?
- Fast and clean bug fixing with attention to detail
- Strong experience in React.js and Next.js projects
- Clear communication and regular updates
- Focus on performance, responsiveness, and user experience
- I dont just fix bugs, I improve overall code quality
Please contact me before placing an order to discuss your project.
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 Sejin Ahmed
Sejin Ahmed
Full Stack Web Developer
- FromBangladesh
- Member sinceJun 2026
Languages
Bengali, English
I am a Full Stack Web Developer experienced in building modern, fast, and scalable web applications.
I specialize in creating clean, responsive, and user-friendly interfaces with strong backend functionality.
• Skilled in TypeScript, JavaScript, Next.js, MERN Stack
• UI/UX development using Material UI (MUI), Tailwind CSS
• Focus on responsive design and mobile-first development
• Experience in building full-stack web apps, REST APIs, and fixing complex bugs
I always focus on writing clean code, delivering high-quality work, and ensuring client satisfaction.
My Portfolio
FAQ
Do you fix both small and large bugs?
Yes, I fix both small UI issues and complex frontend bugs. The price may vary depending on the complexity of the problem.
What technologies do you work with?
I work with React.js, Next.js, JavaScript, TypeScript, MUI, HTML, CSS, Tailwind CSS and API integrations.
How fast can you deliver the work?
Delivery time depends on the issue, but I always try to complete the work as fast as possible. Sometimes I may deliver earlier than expected.
Do you provide responsive design fixes?
Yes, I fix all responsive issues for mobile, tablet, and desktop screens.
Will you improve my code quality as well?
Yes, I not only fix bugs but also clean and optimize related code when necessary to improve performance and maintainability.
Do I need to share full project access?
Yes, I may need access to your code repository (GitHub, ZIP file, or hosting) depending on the issue.
What if you can’t fix the bug?
If I cannot fix the issue, I will inform you immediately and you will not be charged for unnecessary work.
Do you fix API and backend connection issues?
Yes, I can debug frontend API integration problems and fix data fetching or connection errors.
Is my project data safe?
Yes, your code and data will remain completely private and will not be shared anywhere.
