I will fix next js react supabase vercel web app bugs errors deployment issue developer

U
ulyprox
U
ulyprox
Jasper
fix next js react supabase vercel web app bugs errors deployment issue developer
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fix next js react supabase vercel web app bugs errors deployment issue developer

About this gig

Is your Next.js app failing to deploy on Vercel?

Frustrated with React bugs, Supabase errors, or broken authentication?


You're in the right place. I specialize in identifying and fixing complex issues in modern full-stack web applications to get your project running smoothly and production-ready.


What You'll Get


  • Next.js bug fixing
  • React component debugging
  • Supabase authentication & database fixes
  • Vercel deployment troubleshooting
  • API integration repair
  • Performance optimization
  • Responsive UI fixes
  • Clean, maintainable code


Scope of Work


  • Debug runtime & build errors
  • Fix authentication & middleware
  • Resolve API and database issues
  • Repair deployment failures
  • Improve loading speed
  • Fix routing, state management & hydration errors
  • Test before delivery


Tech Stack


  • Next.js
  • React
  • TypeScript
  • JavaScript
  • Supabase
  • PostgreSQL
  • Vercel
  • Tailwind
  • CSS
  • REST
  • API
  • Prisma
  • Git
  • Node.js


Message me before ordering, and let's get your web app working perfectly!

  • Programming language

    • Python

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Operating systems
    • Databases

  • Frontend framework

    • Ember.js
    • Flutter
    • Next.js
    • React.js
    • Vue.js

  • Backend framework

    • Django
    • Laravel
    • Express.js
    • Next.js
    • Node.js

Get to know Jasper

Jasper

Full Stack Next js React Developer, Vercel, Stripe, Figma to Web Exp

  • FromUnited Kingdom
  • Member sinceJul 2026

  • Languages

    English, Spanish, German, French, Italian
I'm Jasper, a Full Stack Web Developer with 5+ years of experience building, debugging, and deploying modern web applications. I specialize in Next.js, React, TypeScript, Supabase, Vercel, Stripe, and Tailwind CSS, delivering scalable, secure, and high-performance solutions. My expertise includes fixing bugs, resolving deployment issues, converting Figma designs into responsive web apps, integrating payment systems, and optimizing user experience. I help SaaS startups, eCommerce businesses, and digital agencies launch reliable, production-ready applications with clean, maintainable code.

Other Software Development Services I Offer

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