Talha R.

Senior Mobile Engineer | Real-Time & AI | React Native, Flutter, Swift

7+ years engineering mobile apps that process live AI responses without melting the phone or killing the UI. I build production-grade 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗮𝗻𝗱 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 the kind that handle live video, encrypted data, and payments for real users, not demo apps. I'm currently the 𝘁𝗿𝘂𝘀𝘁𝗲𝗱 𝗹𝗼𝗻𝗴-𝘁𝗲𝗿𝗺 𝗺𝗼𝗯𝗶𝗹𝗲 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿 on a health-tech platform Expo/React Native, real-time chat & video, E2EE, payment integration, maintaining a 𝟱.𝟬-𝘀𝘁𝗮𝗿 𝘁𝗿𝗮𝗰𝗸 𝗿𝗲𝗰𝗼𝗿𝗱 with clients who've spent $100K–$210K+ on Upwork and rehire repeatedly. 𝗔𝗜 & 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝘁 𝗔𝗽𝗽 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 🔹 Claude API, OpenAI: GPT-4o, Responses/Assistants API 🔹 RAG Pipelines: LangChain, LlamaIndex, Pinecone, pgvector, Weaviate, Qdrant 🔹 AI Chatbots & Knowledge-Base Assistants grounded in client documents 🔹 AI Agents & Agentic Workflows, Function/Tool Calling 🔹 AI-Assisted Development with Claude Code, Cursor for faster, cleaner delivery 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 🔹 Native iOS, Swift, SwiftUI, UIKit 🔹 Expo / React Native real-time chat/video, E2EE, payments in production 🔹 Flutter & Dart 🔹 Native Android App, Kotlin, Objective-C 🔹 Real-Time Systems: LiveKit, WebSockets, live video & chat 🔹 End-to-End Encryption, E2EE, Secure Auth, TUS Resumable Uploads 🔹 Native Webview Wrappers, WKWebView for PWA-to-App Store conversion 🔹 Push Notifications, Firebase Cloud Messaging, Device Identity Handling 🔹 Honest, direct recommendations including telling a client when a different approach is the right call 𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻𝘀, 𝗣𝗮𝘆𝗺𝗲𝗻𝘁𝘀 & 𝗔𝗽𝗽 𝗦𝘁𝗼𝗿𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆 🔹 Payment Integration: Stripe, in-app payment flows 🔹 RevenueCat, Apple In-App Purchase, StoreKit, Entitlement Debugging 🔹 App Store Connect / Google Play Submission, TestFlight, Internal Testing 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 🔹 Node.js, Python, FastAPI, REST APIs 🔹 Firebase, Supabase, AWS, ECS Fargate, RDS PostgreSQL, ElastiCache 🔹 Secure API Design, auth, rate limiting, secrets management 🔹 Git, Android Studio, Xcode, full native + cross-platform toolchain 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗵𝗶𝗿𝗲 𝗠𝗲 🔹 I own complex, real-time, security-sensitive features end-to-end not just tickets 🔹 Fixed-price or hourly, delivered on time, with clear async communication throughout 🔹 Vetted by high-spend, high-hire clients. Building an AI-powered or real-time mobile app that needs to actually work in production? 𝗦𝗲𝗻𝗱 𝗮𝗻 𝗶𝗻𝘃𝗶𝘁𝗲 𝘄𝗶𝘁𝗵 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗱𝗲𝘁𝗮𝗶𝗹𝘀. I'll give you a direct, honest read on scope and approach before we start. 𝗦𝗸𝗶𝗹𝗹𝘀 𝗧𝗮𝗴𝘀 Expo | React Native | Flutter | Swift | iOS Developer | Android Developer | Kotlin | AI Integration | RAG | Claude API | OpenAI API | LangChain | Pinecone | AI Chatbot | AI Agents | LiveKit | WebSockets | Real-Time Video & Chat | E2EE | RevenueCat | In-App Purchase | StoreKit | Payment Integration | Firebase | Supabase | AWS | Push Notifications | Mobile App Development | AI-Assisted Development