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I will debug and fix your react or next js app fast
Md Hera
About this gig
Is your React or Next.js app broken, slow, or stuck? I can fix it.
Startup founders and solo builders hire me when something breaks, and they need it resolved fast without touching everything else that works.
I specialize in debugging and fixing custom-built React and Next.js applications. Whether you're dealing with a silent API failure, a broken auth flow, a database migration gone wrong, or a UI that renders incorrectly in production, I'll identify the root cause and deliver a clean fix.
What I fix:
- API errors, failed requests, and broken integrations
- Authentication issues (JWT, session handling, OAuth flows)
- Database migration errors and query failures
- UI bugs, layout breaks, and component rendering issues
- JavaScript/TypeScript errors and runtime exceptions
- Next. js-specific issues: hydration errors, routing problems, build failures
- Performance regressions and broken deployments
How I work:
I review your codebase, reproduce the issue, and fix the root cause, not just the symptom. You get back clean, maintainable code with no side effects on your existing features.
Tech stack:
React.js · Next.js · TypeScript · JavaScript (ES6+) · Node.js · Tailwind CSS · REST APIs
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 Md Hera
Md Hera
Full stack developer and an UI UX designer
- FromBangladesh
- Member sinceFeb 2021
- Avg. response time1 hour
Languages
Bengali, English, Hindi, Urdu
Hello! I’m Hera, a passionate web designer and developer.
I specialize in helping startups, agencies, and business owners create modern, clean, and user-friendly websites that effectively convert visitors into customers.
My skills include:
- WordPress (Elementor, Astra, Custom Builds)
- Shopify development
- HTML, CSS, JavaScript
- Landing page design
- UI/UX strategy
- Website speed optimization
I prioritize simplicity, elegance, and performance in my work. Each project I undertake is crafted with attention to detail and designed for long-term scalability.
My Portfolio
Other Website Development Services I Offer
FAQ
Do you fix both frontend and backend issues?
Yes, I can fix frontend issues (UI, layout, JavaScript errors) and also handle basic backend problems depending on the stack (especially Node.js or API-related issues).
What types of websites do you work on?
I work mainly on custom-coded websites built with React.js, Next.js, JavaScript (ES6+), TypeScript/Tailwind. If your website uses a different setup, feel free to message me first.
Can you add new features to my existing website?
Yes, I can add new features such as forms, components, API integrations, UI improvements, or custom functionality without breaking your existing code.
How do I know how many orders I need to place?
Please contact me first and explain your issue. I will analyze it and tell you exactly what needs to be done and which package fits best.
Will my website break after the changes?
No. I always make sure the existing functionality remains intact. I carefully test changes before delivering the final result.
Do you provide ongoing support after delivery?
Yes, I offer basic support after delivery to ensure everything works smoothly. For larger projects, we can also discuss long-term collaboration.
What information do you need to start?
I usually need: 1. Website access or code (GitHub, zip, or live link) 2. Clear explanation of the issue 3. Any error messages or screenshots (if available)
