Sumant A.

🚀 10+ Years Building Mobile & Web Products | React Native, Flutter, iOS, Full-Stack & AI

I help startups, founders, and businesses build, improve, and scale mobile apps, SaaS platforms, web applications, and AI-powered products that are reliable, scalable, and ready for real users.

With 10+ years of mobile app development experience and $50K+ earned on Upwork, I've worked across the complete product lifecycle — from MVP development and new product launches to debugging, performance optimization, API integrations, AI implementation, and production scaling.

Clients usually work with me when they need a developer who can take ownership of the technical side, solve problems properly, and get the product shipped without cutting corners.

What I can help you with:

📱 Mobile App Development
• React Native & Expo
• Flutter
• iOS — Swift / SwiftUI
• Android — Kotlin / Java
• Cross-platform app development
• App Store & Google Play deployment
• App maintenance, debugging & optimization

🌐 Web & Full-Stack Development
• React.js & Next.js
• Node.js & NestJS
• Laravel & PHP
• Angular
• RESTful & third-party API integrations
• SaaS platforms & business applications
• Admin panels & analytics dashboards

🤖 AI & Modern Applications
• OpenAI / ChatGPT API integration
• AI chatbots & assistants
• RAG & LLM integrations
• AI-powered recommendations
• AI automation workflows
• AI features inside mobile & web applications

⚙️ Fix, Improve & Scale Existing Products

Already have an application but something isn't working properly?

I can help with:

• App crashes & ANRs
• Performance and memory issues
• Payment & API problems
• Legacy code & refactoring
• Architecture improvements
• Production bugs & stability
• New features without breaking existing functionality
• App performance optimization

☁️ Backend, Cloud & Database

• Node.js / NestJS
• Laravel / PHP
• MySQL • MongoDB • PostgreSQL • Firebase • AWS • Azure