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Fiverr Pro
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$
USD
I will fix bugs in your react and next js website
Momot B
About this gig
Your React or Next.js app is broken, throwing errors, or loading too slowly and you need it fixed today, not next week.
I'm a frontend developer with 3+ years of production experience building React, Next.js and TypeScript applications. I've worked on high-traffic products, including an e-commerce platform with 2M+ SKUs and 100K+ daily active users.
WHAT I FIX
- React and Next.js bugs, crashes, and console errors
- Broken components, state management issues (Redux, Zustand, Context)
- Hydration errors, SSR and build failures
- API integration and data fetching problems
- Slow load times, poor Lighthouse and Core Web Vitals scores
- Layout and responsive issues
RESULTS FROM MY WORK
- Improved Lighthouse score from 54 to 83, LCP from 4.2s to 2.4s
- Reduced JS bundle from 1.35 MB to 412 KB 3.6x faster page loads
HOW IT WORKS
Send me your repository or a description of the issue. I'll identify the root cause, fix it, test it, and explain what was wrong so it doesn't happen again.
Stack: React, Next.js, TypeScript, JavaScript, Redux Toolkit, Zustand, TanStack Query, GraphQL, REST API, TailwindCSS, Jest, Playwright.
Message me before order
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 Momot B
Momot B
React Frontend Developer
- FromGeorgia
- Member sinceAug 2026
Languages
English
I am a Frontend developer with 3+ years of professional experience building production web applications with React, TypeScript, and Next.js. I have shipped features for high-traffic products with 100K+ DAU and 2M+ SKU catalogs, specializing in scalable architecture, performance optimization, and CI/CD pipelines.
FAQ
What do you need from me to start?
Access to your repository (GitHub, GitLab, or a ZIP file), steps to reproduce the issue, and any error messages or screenshots you have. The more detail you give me, the faster I can find the root cause.
What counts as one bug?
One specific issue with a single root cause — for example, a component that crashes, a form that doesn't submit, or a hydration error on one page. If several symptoms come from the same underlying problem, that's still one bug. Message me first and I'll confirm the scope before you order.
What if you can't fix the bug?
If I can't resolve the issue, you get a full refund. I'll also send you my findings on what's causing it, so the work isn't wasted.
Do you work with existing codebases you didn't write?
Yes — that's most of what I do. I've worked on large production codebases, including legacy migrations from jQuery and PHP to React and TypeScript.
Can you also improve my site's speed and Lighthouse score?
Yes. The Premium package includes a full performance audit — Core Web Vitals, bundle analysis, and optimizations applied. I've cut load times by 3.6x and improved Lighthouse scores by 30+ points on production apps.
Will you explain the fix?
Every delivery includes a short write-up of what was wrong, what I changed, and how to avoid the same issue in future.
