Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix react and nextjs bugs in 24 hours
Andrii T
5.0
5.0
About this gig
Hi, I'm Andrii Senior Frontend Engineer with 10 years of What if my issue is more complex than the tier I purchased?experience in React, Next.js, and TypeScript.
If your React or Next.js app has a bug or performance issue, I can usually diagnose and fix it within 24-48 hours.
WHAT I FIX:
Layout bugs, broken styling, responsive issues
Component logic errors, state management bugs
TypeScript errors and type issues
API integration problems (REST, GraphQL, WebSocket)
Build/deployment failures (Webpack, Vite, Next.js)
Hydration errors, SSR/CSR mismatches in Next.js
Performance issues slow rendering, large bundles, poor Core Web Vitals
WHAT YOU GET:
Clear diagnosis of the problem
Clean, production-ready fix
Brief explanation of the solution
Quick turnaround (24-48 hours)
MY STACK:
React, Next.js, TypeScript, Tailwind, Styled Components, WebSocket, GraphQL, REST, Webpack, Vite, Material UI.
Send me a message before ordering if you're not sure which tier fits happy to take a quick look first.
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 Andrii T
Andrii T
Senior Frontend Engineer, React, Nextjs, TypeScript
- FromUkraine
- Member sinceAug 2024
- Avg. response time3 days
- Last delivery1 week
Languages
English, Russian, Ukrainian
Senior Frontend Engineer with 10 years of commercial experience building production web applications across e-commerce, IoT, fintech and digital agency contexts. Specialised in React and Next.js with deep TypeScript expertise, modern styling systems (Tailwind, Styled Components, Vanilla Extract) and real-time architectures (WebSocket, GraphQL, REST). Proven record of delivering pixel-perfect interfaces, leading frontend on solo and cross-functional teams.
Portfolio: https://folio-lyart-sigma.vercel.app
My Portfolio
FAQ
What if my issue is more complex than the tier I purchased?
I'll take a quick look first and let you know upfront. If the scope is bigger than the tier covers, I'll suggest upgrading or recommend a custom offer with accurate timing and pricing. No surprise charges mid-order.
Do you work with TypeScript only, or JavaScript projects too?
Both. I work with TypeScript daily (it's my preferred setup), but JavaScript-only projects are equally fine.
What if I don't have a GitHub repo — can I send a zip file?
Yes, zipped project files work fine. I'll set up the project locally to reproduce and fix the issue.
Can you fix bugs in older React versions or class components?
Yes — I've worked with React across many versions and patterns (class components, hooks, Redux, Context, modern App Router in Next.js). Just let me know what you're working with.
What happens after the fix is delivered?
You get the fix in a branch/commit (or zip if no repo). I'll briefly explain the issue and how I fixed it. You test it, request changes if needed (revisions included), and accept delivery once you're satisfied.
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J 
jackyace
Germany
Andrii has amazing frontend development skills. He communicates reliably and quickly understands requirements. Speed of delivery was top noth and he was very committed to resolving bugs quickly. Overall I am very happy with the work. Thanks!
$50-$100
Price
3 days
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J jackyace
Germany
Andrii has amazing frontend development skills. He communicates reliably and quickly understands requirements. Speed of delivery was top noth and he was very committed to resolving bugs quickly. Overall I am very happy with the work. Thanks!
$50-$100
Price
3 days
Duration
Helpful?
