Randhir S.

I’m a Senior Mobile App Developer with 8+ years of experience building high-performance iOS, Android, React Native and Flutter applications for startups, growing businesses, and enterprises. I help businesses turn ideas into scalable mobile products, from MVP development and product launches to complex applications requiring custom backend systems, APIs, third-party integrations, and AI-powered features. 📱 What I Build * Native iOS & Android Applications * React Native & Flutter Apps * AI-Powered Mobile Applications * SaaS & Marketplace Apps * FinTech Applications * Healthcare & Fitness Apps * E-commerce & On-Demand Apps * Real-Time Chat & Communication Apps * Location-Based Applications * IoT & Connected Device Apps * MVPs & Product Prototypes 🤖 AI & Automation I also integrate AI into mobile and web products, including: OpenAI / GPT integrations Claude AI integrations AI Chat Assistants AI-powered mobile features Generative AI applications Smart search and recommendations Workflow automation ⚙️ Technology - Mobile: React Native, Flutter, Swift, Kotlin, Java - Backend: Node.js, NestJS, Laravel, PHP, Express.js - Databases: Firebase, MongoDB, MySQL, PostgreSQL, DynamoDB - APIs & Integrations: REST APIs, WebSockets, Stripe, PayPal, Razorpay, Twilio, Google Maps, Apple Maps and more. I also handle backend/API development, third-party integrations, performance optimization, deployment and ongoing support, so you can work with one development partner across the product. 🏆 Why Work With Me Top Rated Plus on Upwork 99% Job Success 15,000+ Upwork hours $300K+ earned on Upwork 8+ years of development experience Experience working with startups, scale-ups and enterprises Clean, scalable and maintainable architecture Agile development with regular progress updates Whether you need to build a new mobile product, modernize an existing application, add AI capabilities, or scale an existing platform, I can help take it from idea to production. Let’s discuss your project and the right technical approach.