I will fix next js bugs, react errors, or optimize web performance

A
alifaizllc
A
alifaizllc
NexusStack
fix next js bugs, react errors, or optimize web performance
Full Screen
fix next js bugs, react errors, or optimize web performance
Full Screen
Full Screen
fix next js bugs, react errors, or optimize web performancefix next js bugs, react errors, or optimize web performancefix next js bugs, react errors, or optimize web performance

About this gig

" Special Launch Pricing: I am new to Fiverr but a veteran in engineering. I am offering these introductory rates for my first 3 clients only to build my reputation on this platform. Take advantage of senior-level work at junior-level prices while it lasts!"

"Is your Next.js app broken, slow, or showing mysterious errors? Lets fix it today."

Nothing kills a business faster than a broken website or a 5-second load time. I am a Senior Full-Stack Engineer specializing in high-performance React and Next.js environments. I don't just "patch" errorsI resolve the root cause and optimize your code for the future.

What I can handle for you:

  • Next.js & React Bugs: Hydration errors, routing issues, or state management glitches.
  • Speed Optimization: 90+ Lighthouse scores and Core Web Vitals (LCP, CLS, FID).
  • API & Auth Fixes: Troubleshooting Stripe, Supabase, Firebase, or custom REST APIs.
  • Deployment Issues: Vercel, Netlify, or AWS deployment errors.
  • Responsive Design: Fixing CSS/Tailwind layout breaks on mobile.

The Nexus Promise:

Clean, documented code.

Lightning-fast communication.

24-hour turnaround for urgent fixes.

Don't let a bug stop your growth. Message me now and let's get your project

  • Programming language

    • HTML & CSS

  • Expertise

    • Debugging
    • Localization
    • Performance
    • Design
    • Databases

  • Frontend framework

    • Next.js
    • Nuxt.js
    • React.js
    • Tailwind CSS
    • Three.js

  • Backend framework

    • FastAPI
    • Next.js
    • Node.js
    • Supabase
    • Firebase

Get to know NexusStack

NexusStack

Senior Full Stack Developer Nextjs 3D Web and API Expert

  • FromPakistan
  • Member sinceAug 2026
  • Avg. response time1 hour

  • Languages

    Urdu, English, Hindi
Senior Full-Stack Engineer bridging complex backend architecture and breathtaking frontend experiences. Static websites no longer convert; immersive experiences do. • Frontend & 3D: Next.js, React, TypeScript, Tailwind, Three.js, R3F, GSAP, Framer Motion • Backend & DB: Node.js, Express, Python (FastAPI/Django), PostgreSQL, MongoDB, Supabase • Cloud & APIs: AWS, Vercel, Stripe, OpenAI, Twilio, CRM/ERP Syncing I architect scalable SaaS platforms and high-end 3D marketing sites focused on speed (95+ Lighthouse), UI/UX excellence, and real growth. Ready to build the future? Let's talk.

My Portfolio

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