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I will fix react and next js bugs, javascript errors and responsive issues
Emon
About this gig
Your React or Next.js app looks fine on your laptop, then falls apart on a phone. Or the console is full of red errors, or the build fails the moment you deploy. That's the kind of problem I fix.
I build with React, Next.js, JavaScript, and TypeScript, including a real-time chat app, a live site for a student association, and many more, so finding my way around someone else's code is normal for me.
Things I fix a lot:
- Hydration failed and window is not defined errors
- Pages that scroll sideways or look broken on mobile
- Build errors, Module not found, failed Vercel or Netlify deploys
- A blank white page after deploy
- TypeScript errors that block the build
- CSS and Tailwind layouts that break on some screens
- Apps first made with Cursor, Lovable, Bolt, or v0
How it works:
I reproduce the bug on my side, find what's really causing it, and fix that, not just the symptom. Then I check the page on phone, tablet, and laptop sizes. You get a short note: the cause, what I changed, and how to check it. Standard and Premium also add a test, so the same bug can't sneak back in.
Not sure your bug fits a package? Send me the error or a screenshot before ordering, and I'll tell you honestly.
Get to know Emon
Emon
Software Engineer
- FromBangladesh
- Member sinceJan 2025
- Avg. response time1 hour
Languages
Bengali, English
I'm a Software Engineer and Full-Stack Web Developer with 2+ years of professional experience building responsive, scalable, and user-friendly web applications.
I specialize in React.js, Next.js, TypeScript, JavaScript, and Tailwind CSS for frontend development, along with Node.js, Express.js, ASP.NET Core, and REST API integration for backend development.
From modern website development and custom dashboards to full-stack applications, authentication systems, database integration, and AI-powered features, I focus on delivering clean, maintainable, and reliable solutions.
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Other Software Development Services I Offer
FAQ
What counts as one bug?
One problem with one cause. A menu that won't open on mobile is one bug. Three pages that break for the same CSS reason also count as one. If I find a second, unrelated cause, I'll tell you before I do anything else.
My app was built with Cursor, Lovable, Bolt or v0. Can you help?
Usually, yes, as long as it's a React or Next.js app, I can run it on my machine. I'll fix the problem properly and point out anything else that looks fragile. Apps that depend heavily on Supabase are outside this gig for now.
Can you fix a site that isn't React or Next.js?
Plain HTML, CSS, and JavaScript sites, plus Vite projects. For WordPress, Shopify, or Wix themes, this isn't the right gig, and I'd rather tell you that up front.
What do you need from me to start?
The code (a repo invite or a zip), the exact error, the steps to see it, and the screen or phone where it breaks. A live or staging link helps a lot. If the bug is behind a login, please send a test account, not your own password.
What if you can't fix it?
I make sure I can reproduce the bug before I start, and I'll tell you right away if it's bigger than the package. If I truly can't fix it, you get your money back through Fiverr, along with notes on what I found.
Which screens and browsers do you check?
Every fix is checked at phone, tablet, and laptop widths in Chrome, Firefox, and Safari. If the bug only shows up on one particular phone, tell me the model and browser, and I'll match it as closely as I can.
Will you change my live site?
No, not unless you ask. I push the fix to a separate branch or a pull request in your repo, or send a zip. You decide when it goes live. On Premium, I can also handle the deployment for you.
How do you use AI tools?
I write code myself and also use AI coding assistants such as Claude Code. Every change is reviewed line by line and tested before delivery, and I take full responsibility for it. Your code goes to an AI tool only if you agree. Want no AI at all? Just tell me before ordering.
