I will fix deploy ai app, nextjs app, vercel errors, firebase backend setup bugfixing

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Festus S

About this gig

Need an expert to fix, deploy, or optimize your AI app? You're in the right place.


I help businesses, startups, and founders build, fix, and deploy AI web applications using Next.js, Vercel, Firebase, OpenAI, React, TypeScript, and modern web technologies. Whether you're facing Vercel deployment errors, Firebase backend issues, authentication problems, build failures, API integration issues, or performance bottlenecks, I can help get your application running smoothly.


Services include:

  • AI App Development
  • AI Chatbot Development
  • Next.js Development
  • Vercel Deployment & Hosting
  • Firebase Backend Setup
  • OpenAI Integration
  • Authentication Setup
  • API Integration
  • Bug Fixing & Troubleshooting
  • Web App Optimization
  • Database Configuration
  • Production Deployment


Why choose me?

  • Fast communication
  • Clean and scalable solutions
  • Secure backend configuration
  • Reliable deployment process
  • Focus on long term performance


Whether you have an AI SaaS, AI chatbot, web application, startup MVP, or custom AI platform, I'll help you fix issues, deploy successfully, and deliver a production ready solution.


Contact me before ordering so we can discuss your project requirements and choose the best solution.

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Get to know Festus S

Festus S

Full Stack AI SaaS Developer

  • FromUnited States
  • Member sinceMay 2026
  • Avg. response time1 hour
  • Languages

    English, French, German, Spanish
I help startups, founders, and businesses build, fix, and deploy modern AI SaaS and web applications using Base44, Lovable, Firebase, Supabase, Vercel, and scalable backend technologies. From bug fixing and backend database setup to frontend optimization, API integration, Headless CMS, deployment, and MVP development, I deliver secure, fast, and production-ready solutions. Whether you need a full stack developer for AI web apps, SaaS deployment, Firebase backend fixes, or scalable MVP support, I am here to help grow your project professionally.