Brijeshwar S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Aug 7, 2026.

I’m a senior mobile app developer with 6+ years of experience building AI-powered mobile apps using hybrid frameworks (Flutter, React Native) and native platforms (Swift for iOS, Kotlin/Java for Android). I help startups and enterprises launch intelligent, scalable, and cross-platform apps that run seamlessly on iOS & Android. 🚀 Expertise ✔ AI-Powered Apps – Conversational AI, ChatGPT/GPT API, Voice Assistants, AI Chatbots ✔ Cross-Platform Apps – Flutter, React Native, FlutterFlow ✔ Realtime Features – Video Calls, Chat, Live Tracking, Push Notifications ✔ Smart UX Features – Predictive UI/UX, Personalized Recommendations, Content Generation ✔ Secure Payments – Stripe, PayPal, Razorpay, Apple Pay, Google Pay ✔ Scalable Backends – Firebase (Firestore, Functions, Authentication, FCM), Node.js, GraphQL ✔ Data & AI – TensorFlow Lite, Image/Audio Recognition, OCR, AI-powered Search 🛠️ Tech Stack Frontend: Flutter, React Native, FlutterFlow iOS Development: Swift, SwiftUI, Objective-C, UIKit, CoreData Android Development: Kotlin, Java, Jetpack Compose, Android SDK Realtime Features: Live Chat, Push Notifications, Video Calls, Maps & Geolocation Backend: Firebase, Node.js, REST APIs, GraphQL Integrations: Twilio, Agora, WebRTC, Google Maps API, Open AI, Custom Model, AI & Machine Learning: GPT/OpenAI APIs (Chatbots, Smart Forms, Summarization), Recommendation Engines & Personalized Content Databases: Firestore, Supabase, MySQL, PostgreSQL Tools: GitHub Actions, CI/CD, Figma, Adobe XD 🔹 Collaboration Agile (Scrum/Kanban), Jira, Trello, ClickUp Distributed Team Collaboration & Mentoring 💼 Highlight Projects ✅ Telemedicine Platform – HIPAA-compliant video calling, prescriptions, record handling ✅ E-commerce App – Stripe/PayPal integration, cart logic, push notifications, checkout flows ✅ Fintech Dashboard – Multi-tier authentication, secure transactions, data visualization ✅ AI Chatbot App – Lead qualification & content curation (OpenAI APIs) ✅ Rewards & Loyalty App – QR check-ins, points, referral logic ✅ SaaS Dashboard Frontend – Firebase + Supabase integration ✅ Social Media MVP – Post scheduling, AI captions, chat features ✅ Logistics Tracking App – Real-time geolocation & delivery route optimization ✅ Why Work With Me? Focus on scalability, performance, and user experience Hands-on experience with 50+ published apps Trusted by both early-stage startups and established enterprises Full end-to-end development: architecture → coding → testing → deployment If you’re looking for a dependable Hybrid Mobile App Developer who can deliver cross-platform apps (Flutter, React Native, FlutterFlow) with modern AI-powered features, let’s connect. Click “Invite to Job” or send me a message, and I’ll review your requirements to suggest the best way forward. 🔍 Keywords Mobile App Developer, Hybrid Mobile App Developer, Flutter Developer, React Native Developer, FlutterFlow Expert, Firebase Mobile App Developer, Native Mobile App Developer, iOS Developer, Android Developer, Swift Developer, SwiftUI Developer, Kotlin Developer, Java Android Developer, Objective-C Developer, Native App Performance Optimization, App Store Deployment, Google Play Developer, iOS Swift Developer, Android Kotlin Developer, Secure Mobile App Development, Biometric Authentication, Push Notifications, Native App Architecture, Mobile App Developer for iOS and Android, E-commerce Native App Developer, Fintech Mobile App Developer, Healthcare Native App Developer, SaaS Native App Developer, Native MVP Mobile App Development.