I will build a custom app for your business using google antigravity ai

J
john_john1222
J
john_john1222
John S
build a custom app for your business using google antigravity ai
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build a custom app for your business using google antigravity ai

About this gig

Senior Software Engineer | SaaS & POS Systems Architect

I design and architect high performance digital solutions using Clean Architecture, building scalable, secure, and production ready software for startups and enterprises.

Core Expertise

SaaS MVP Development

End to end full stack applications built for speed, scalability, and growth.

POS & Business Systems

Cloud-based inventory, sales, and business management software tailored for modern operations.

Animated & Interactive Web Experiences

Immersive 3D websites and modern web applications built with advanced development tools.

I prioritize engineering excellence, performance optimization, and maintainable code to ensure your product is built to last.


Lets turn your vision into a robust, scalable product.

Contact me for a technical consultation.


  • Application Type

    • Web Application

  • AI Type

    • Chat
    • Shopping
    • Booking
    • Restaurant
    • Health & Fitness
    • Education
    • Entertainment
    • Finance
    • Medical
    • Travel
    • Lifestyle
    • Streaming
    • News
    • Productivity Tools
    • E-commerce
    • Kids
    • Real Estate
    • Gaming
    • Wallet App

  • Programming Language

    • C
    • C#
    • C++
    • Dart
    • Java
    • JavaScript
    • Swift
    • TypeScript
    • React

  • Web Frameworks

    • React
    • Angular
    • Django
    • Flask
    • Ruby on Rails
    • ASP.NET

  • Desktop Frameworks

    • Electron
    • Windows Presentation Foundation (WPF)
    • JavaFX
    • WinForms
    • GTKSharp
    • Uno Platform
    • Flutter for Desktop
    • Ultimate++
    • NW.js

  • No & Low-Code Builders

    • Lovable
    • Base44
    • Replit

Get to know John S

John S

Full Stack AI Developer, AI SaaS, Chatbots, Web Automation, Chrome Extensions

5.0(9)
  • FromNigeria
  • Member sinceJul 2025
  • Last delivery6 months

  • Languages

    English, French, German, Spanish
I turn broken AI-built apps into reliable, production ready products. Most fail not because the idea is bad, but because the code is broken, inconsistent, or incomplete. I specialize in Vibe Coding fixing and launching apps built with Lovable, Replit, Bolt, Cursor, Claude, and similar tools. Broken responsiveness, database errors, authentication failures, security gaps, API breakdowns, messy code I fix them fast and get you to market 2x quicker than a rebuild. What you get: fully functional apps, clean integrations (Stripe, auth, databases), reliable deployments, maintainable code.

My Portfolio

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