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I will fix nextjs bugs and optimize react app speed and performance
Talha K
About this gig
Is your React or Next.js app crashing, throwing errors, or loading too slowly?
A buggy, slow website damages user trust and kills your SEO. I'll find the root cause not just patch the symptom.
Bug Fixing UI glitches, API errors, routing & state issues (Redux/Context)
Performance Core Web Vitals, lazy loading, bundle size reduction
SSR/SSG Fixes Next.js data fetching, hydration & rendering errors
Code Refactoring Clean up messy React code, update dependencies
Responsive Fixes Mobile/tablet/desktop using Tailwind or custom CSS
Stack: Next.js · React · TypeScript · Node.js · Redux · Tailwind CSS
Root cause analysis no band-aid fixes
Clean, documented code delivered
Fast turnaround with daily updates
Message me with your site link and issue description before ordering.
Keywords "Next.js bug fix", "React performance", "Core Web Vitals", "SSR", "Redux", "Tailwind" all present naturally. Opening line mirrors exact buyer search language buyers searching "fix Next.js bugs" will see their words reflected immediately.
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 Talha K
Talha K
MERN and NextJs Developer
- FromPakistan
- Member sinceDec 2025
- Avg. response time1 hour
Languages
English
Experienced MERN Stack Developer specialized in building robust SaaS platforms and high-performance frontends. My stack includes ReactJS, Express, MongoDB, and TypeScript. I bring extra value by handling your server configuration and deployment (DigitalOcean / AWS). I focus on security, speed, and pixel-perfect design. If you need a developer who understands both business logic and cloud infrastructure, send me a message!
My Portfolio
FAQ
How do I share my codebase with you securely?
You can share a private GitHub or GitLab repository, a ZIP file via Fiverr, or give read-only access to your project. I treat all code as strictly confidential and never share or reuse client code. If needed, I'm happy to sign an NDA before we start.
What if you can't fix the bug?
Before you order, I review your issue description and confirm I can fix it. If a bug turns out to be outside the agreed scope during work, I'll explain clearly what's happening and either provide a solution or offer a full refund — I don't charge for problems I can't solve.
How much can you realistically improve my Lighthouse / Core Web Vitals score?
Results depend on your current score and codebase, but most clients see a 20–50 point improvement. Common fixes include image optimization, lazy loading, code splitting, removing unused dependencies, and fixing render-blocking resources. I target a Lighthouse score of 90+ on the Premium package.
Do you fix bugs in deployed apps or only local development environments?
Both. I can debug issues in your local codebase, staging environment, or live production app. For production issues, I work carefully to avoid any downtime and will always test fixes thoroughly before they go live.
Will you explain what caused the bug and how you fixed it?
Always. Every delivery includes a clear summary of what the root cause was, what I changed, and why. No black-box fixes — you'll understand exactly what was done so you or your team can maintain it going forward.
