I'm a mobile technical lead with 12+ years building, stabilizing, and shipping production apps across Android, iOS, Flutter, and React Native. Teams bring me in when an app is unstable or a release is stuck — I inherit messy codebases, drive down crash rates, unblock release pipelines, and ship SDKs other developers build on. Recent work: • Yahoo Fantasy Sports — redesigned core user-facing screens and refactored from MVP to MVVM, cutting the crash rate to target. • Portal (Web3 wallet) — led the Android and React Native SDKs that other teams integrate. • Unified Remote — Android app with 10M+ installs worldwide. • Plume — B2B Android app with multiple product flavors used across 10+ businesses. Native depth, cross-platform range: • Android — Kotlin, Java, Jetpack Compose, Coroutines, Clean Architecture (Google Certified Associate Android Developer). • iOS — Swift, shipped multiple apps end-to-end from Figma to App Store and post-release maintenance. • Flutter — Riverpod, GetX, GoRouter, Dio. • React Native — app development and SDK maintenance. • Firebase — Auth, Firestore, Remote Config, Cloud Messaging, Crashlytics, and on-device ML. I write clean, maintainable code, take full ownership of delivery, and build stable, performance-focused apps that hold up in production. If you need someone who can both lead the architecture and ship the hard parts, let's talk.

🔥 Do you need to build a high-quality Mobile App that brings real Revenue — not just downloads? 🔥 ✔️ I Develop Mobile Apps designed to maximize your chances of Success. ✔️ I have a background in Product Management. I don’t just write code — I build Businesses. ✨ MVP Strategy: I help you define the core features that validate your idea without wasting time and budget on the wrong direction. ✨ Product-First Approach: My development process gives you the exact instruments you need to test your hypotheses in the real market. I develop cross-platform and native iOS and Android applications using React Native, TypeScript, Swift / SwiftUI / Kotlin. I specialize in subscription-based apps, combining strong engineering skills with deep product growth expertise. 💡 My focus areas include: - AI-powered apps - Productivity tools - Utilities - Health & fitness apps - Trackers - Lifestyle - Business applications. 💡 I’m a Senior Mobile Developer with 10+ years of experience in iOS/Android development and a proven track record in building and scaling mobile applications with subscriptions. My focus is not just on code — I help you create a profitable mobile product that users love and that meets all App Store and Google Play requirements. 💡 As a Growth expert, I can advise how to increase app engagement, optimize retention, and grow your MRR. Whether you’re launching a new mobile app or improving an existing one, I can guide you through development, monetization, and analytics setup. 🏆 My achievements: - 10,000,000+ app users - 100,000+ App Store subscriptions - 99% crash-free rate - Trial conversion rate — up to 15% - 1st day retention rate — up to 40% 🎓 My approach: - Agile/SCRUM development for fast feedback - Data-driven decisions using Amplitude / AppsFlyer - Subscription analytics via Adapty / RevenueCat - Clean and scalable code in TypeScript, following SOLID principles - Clear, structured delivery process and transparent communication You’ll get: - A stable, scalable Cross-Platform app ready for the App Store or Google Play - Advanced analytics and dashboards for decision-making - Subscription tracking and flexible revenue management - A partner who understands both mobile development and growth strategy 👉 If you’re looking for a mobile developer who can build and grow your iOS and/or Android app from idea to revenue — let’s talk. My skills in iOS development: React Native, TypeScript, Swift, SwiftUI, Flutter, FlutterFlow, Dart, Kotlin, iOS, Android, Objective C, UIKit, Multithreading, Memory management, API, JSON, HTML, XML, Networking, Push notifications, CoreData, Combine, SOLID principles, Design patterns, MVC, MVP, MVVM, Coordinators, Xcode, GIT, SwiftLint, DI, CI/CD, Firebase, AppStore, ASO, Amplitude, AppsFlyer, Figma, UI/UX, Agile, Scrum, Kanban, AI.

I build production-ready Flutter and React Native apps for iOS and Android, and I specialize in one thing most developers avoid , cleaning up and scaling AI-generated codebases built with Lovable, Bolt, Cursor, or Claude Code. If your vibe-coded MVP works but needs a real developer to fix the bugs, restructure the code, and get it live on the App Store and Play Store , this is exactly what I do. What I regularly build: Secure authentication & role-based access Subscriptions, in-app purchases & payments Real-time features (chat, live updates, WebSockets) API-driven and data-intensive applications Clean, scalable architecture for long-term growth AI-generated MVP cleanup & production scaling I understand how AI tools generate code, where they cut corners, and how to turn an unstable MVP into a shippable product without rewriting everything from scratch. What clients can expect: Clean, maintainable code Honest timelines & daily/weekly progress updates Clear communication in plain English Smooth App Store & Play Store delivery Tech stack: Flutter, React Native, Firebase, Node.js, Laravel, REST APIs, databases, subscriptions, payments, and real-time systems.

🏆 Top 10% Talent on Upwork 🎯 100% JSS 🌟 Premium Mobile App Developer | Native (iOS/Android) & Cross-Platform Solutions I help 𝐟𝐨𝐫𝐰𝐚𝐫𝐝-𝐭𝐡𝐢𝐧𝐤𝐢𝐧𝐠 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 turn complex ideas into high-performing, AI-powered 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗻𝗱 𝘄𝗲𝗯 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀. As an AI Mobile App and Full-Stack Developer, I architect end-to-end solutions that automate workflows, boost user engagement, and scale profitably through smart AI integration and robust software engineering. My focus is simple: build smart applications that solve real business problems, not just write code. Let's transform your vision into a scalable product that dominates the market From AI-powered mobile apps to scalable SaaS platforms, every project starts with a deep dive into your technical architecture and business goals to uncover what’s holding back your product's potential. Then I architect, build, or refine your application to boost performance and user adoption. What I work on: ✅ Native iOS & Android App Development that engages and retains users ✅ Custom AI App Development & Integration that automates workflows and adds smart capabilities ✅ End-to-End SaaS Development built for scalability and high-growth potential ✅ Full-Stack Web Development ensuring robust backends and seamless frontends Let’s build a smart application that drives your business forward every day. Thanks & Regards, Talha Athar Highlighted Skills: Mobile App Development | Mobile App Developer | Flutter Mobile App| Flutter Mobile App Developer | Flutter Mobile App Firebase | Flutter Mobile App Dart | Flutter Mobile App Developer | Mobile App Developer | Mobile Developer | React Native | React Native Mobile App Development | Mobile App Builder | Flutter Mobile App Developer | Flutter Laravel | Mobile App Development | Mobile App Developer | Flutter Mobile App| Flutter Developer | Flutter Mobile App Firebase | AI Mobile App Developer | AI Mobile App| Full Stack Mobile App Developer | Mobile App Development Consultation | iOS Mobile App Developer | Android Mobile App Developer | Hybrid Mobile App

For more than 10 years I have managed iOS app development. I was also responsible for defining architecture. I have hands on with development of iOS apps in Swift, SwiftUI and Objective-C. I also have hands-on knowledge of Flutter App development. I have developed Flutter app for Vehicle Tracking, Object Detection and Image Segmentation (SSD MobileNet, YOLO, DeepLab+MobileNet) using TensorFlow Lite. I am also PSM I certified. I can provide services as a SCRUM master.

I am an iOS and Android (Swift/Flutter) application developer with solid software development experience and with a robust foundation in high-quality mobile app development and backend integration. Skilled in Rest API, I create efficient and reliable apps that seamlessly communicate with backend systems. Possessing a keen sense of UI/UX design principles, I ensure that each app I develop is visually appealing and user-friendly. My diverse skill set and passion for mobile app development empower me to create engaging and innovative apps that meet users' needs. iOS · Apple Swift/SwiftUI (Programming Language) · Flutter/Dart · Firebase · Objective-C · Object-Oriented Programming (OOP) · Xcode · RESTful API Integration · JSON · Git · Android Studio · VSCode

AI-First Full-Stack Engineer | 13+ Years Building Intelligent Systems ✔ 1000+ Hours of Proven Excellence ✔ 100% Job Success | 100% Client Recommendation ✔ 100% Long-term Collaborations ✔ Scalable, High-Performance Solutions With 13+ years of full-stack experience and a sharp pivot into AI engineering, I build intelligent, production-ready systems — from LLM-powered SaaS platforms to autonomous AI agents and computer vision pipelines. I don't just integrate APIs; I architect solutions where AI is the core product, not an afterthought. What I Build with AI: ▪ LLM-Powered Apps (GPT-4o, Claude, Gemini, Mistral, LLaMA) ▪ RAG Systems & Custom Knowledge Bases (LangChain, LlamaIndex, Pinecone, Weaviate) ▪ AI Agents & Multi-Agent Workflows (AutoGen, CrewAI, LangGraph) ▪ Fine-Tuning & Prompt Engineering (OpenAI, Hugging Face, LoRA/PEFT) ▪ AI Chatbots, Copilots & Virtual Assistants ▪ Computer Vision & OCR Pipelines (OpenCV, YOLO, Tesseract) ▪ Voice AI Apps (Whisper, ElevenLabs, Deepgram) ▪ AI Automation & Intelligent Workflow Builders (n8n, Zapier + AI) ▪ Predictive Analytics & ML Model Deployment (scikit-learn, TensorFlow, FastAPI) ▪ AI-Integrated SaaS MVPs & B2B Platforms Full-Stack Backbone (AI needs great infrastructure): Frontend: ReactJS, NextJS, Angular, VueJS Backend: NodeJS, Python (Django, Flask, FastAPI), ASP.Net Mobile: React Native, Flutter, Native iOS/Android Databases & Vector Stores: PostgreSQL, MongoDB, MySQL, Firebase, Pinecone, Chroma Cloud & DevOps: AWS (SageMaker, Lambda), Google Cloud (Vertex AI), CI/CD Pipelines AI/ML Stack: LangChain, LlamaIndex, OpenAI SDK, Hugging Face, LangGraph, CrewAI, Ollama Industries I've Built AI Solutions For: ▪ FinTech — AI fraud detection, smart financial assistants ▪ Healthcare — HIPAA-compliant AI document processing, clinical summarization ▪ Ecommerce — AI-powered recommendation engines & product search ▪ Legal & HR Tech — Contract analysis, AI resume screeners ▪ Real Estate — Intelligent listing assistants & market prediction ▪ Education — AI tutors, personalized e-learning systems ▪ Logistics — Predictive routing & intelligent supply chain tools ▪ SaaS & B2B — AI copilots embedded into core products Why Clients Choose Me for AI Projects: ▪ I architect AI pipelines end-to-end — not just prompt wrappers ▪ Strong focus on accuracy, cost efficiency, and latency optimization ▪ LLM evaluation, testing, and hallucination mitigation built-in ▪ Transparent, async-friendly communication ▪ Flexible engagements: Fixed, Hourly, Dedicated, or Hybrid Whether you're launching an AI-native startup, embedding LLMs into your existing product, or need to rescue a stalled AI project — I'm your partner from architecture to deployment. Drop a message — let's turn your AI vision into a working product.

𝘼𝙣 𝙖𝙥𝙥 𝙞𝙙𝙚𝙖 𝙞𝙨 𝙤𝙣𝙡𝙮 𝙩𝙝𝙚 𝙨𝙩𝙖𝙧𝙩 — 𝙩𝙝𝙚 𝙧𝙚𝙖𝙡 𝙘𝙝𝙖𝙡𝙡𝙚𝙣𝙜𝙚 𝙞𝙨 𝙗𝙪𝙞𝙡𝙙𝙞𝙣𝙜 𝙞𝙩 𝙘𝙤𝙧𝙧𝙚𝙘𝙩𝙡𝙮. I’ve spent the last 8+ years helping startups and businesses do exactly that. I’m Umar — a Senior Mobile App Developer specializing in AI-powered applications, native iOS development, and cross-platform mobile apps using Flutter and React Native. I’ve completed 42+ projects, worked 2100+ hours on Upwork, and helped businesses build scalable, production-ready mobile applications that solve real problems and generate revenue. I don’t just build apps. I think through the product, identify weak points early, optimize architecture for long-term scalability, and make sure the final product performs smoothly in the real world. My advantage comes from working across multiple industries including fitness, aviation, social media, food delivery, travel, hotel booking, and community platforms — giving me the experience to understand what works before development even begins. Right now, my strongest focus is building AI-powered mobile applications: products that don’t just integrate AI for marketing purposes, but use it in practical ways that improve user experience, automation, personalization, and business growth. 𝙑𝙞𝙗𝙚 𝘾𝙤𝙙𝙚 𝙄𝙨 𝙁𝙖𝙨𝙩 — 𝙄 𝙈𝙖𝙠𝙚 𝙄𝙩 𝙎𝙘𝙖𝙡𝙖𝙗𝙡𝙚: Specializing in optimizing and stabilizing early-stage or vibe coded mobile applications, transforming unstructured codebases into clean, scalable, and production-ready systems. 𝙒𝙝𝙖𝙩 𝙄 𝙗𝙪𝙞𝙡𝙙: - AI and Intelligent Applications - LLM Integrations | AI chatbots | Workflow automation - Native iOS Development - Swift | SwiftUI | Xcode - Cross-Platform Mobile Apps - Flutter | React Native - Web Development - React.js | Next.js | Vue.js - Backend and API Development - RestApi | Node.js | Express.js | Laravel - Database and Cloud - PostgreSQL | MongoDB | Firebase | AWS | Google Cloud | Azure - Payments and Subscriptions - Stripe | PayPal | RevenueCat - Real-Time Systems - Chat applications | WebRTC video calling | Geolocation & Tracking 𝙒𝙝𝙖𝙩 𝙬𝙤𝙧𝙠𝙞𝙣𝙜 𝙬𝙞𝙩𝙝 𝙢𝙚 𝙖𝙘𝙩𝙪𝙖𝙡𝙡𝙮 𝙡𝙤𝙤𝙠𝙨 𝙡𝙞𝙠𝙚: - Clear communication. - Consistent updates. - No disappearing halfway through the project. I take ownership of the product, think long-term, and focus on building clean, scalable applications that are easy to maintain and improve over time. If your project needs more firepower, access to a 10+ person development agency is available with the same standards, bigger bandwidth, and consistent senior-level oversight at every stage. If you’re serious about building a high-quality mobile app that’s scalable, stable, and built for long-term success — send me an invite and let’s discuss your project.

I am an iOS/Web developer with 7 years of development experience. I have worked on apps that serves more than 20 million users. I am familiar with Figma. I have a good experience in swift and objective-C and all iOS frameworks like: UIKit, SwiftUI, CoreData .. Key Skills: App Design and Development: Creating user-friendly and responsive applications that align with Apple's design guidelines. Code Maintenance and Optimization: Writing clean, efficient, and maintainable code, as well as optimizing applications for performance and usability. Integration of APIs and Third-Party Services: Connecting the app with various services, such as backend servers, payment systems, and other third-party services. Testing and Debugging: Conducting thorough testing to ensure apps are free of bugs and perform well under various conditions, and using tools like XCTest for unit testing. Continuous Learning: Staying updated with the latest iOS updates, tools, and trends, as Apple frequently releases new versions and features. Collaboration: Working closely with designers, backend developers, and other stakeholders to bring an app from concept to completion.

Senior iOS Software Engineer with 15+ years in software development and 10+ years specializing in iOS. I've delivered 50+ mobile applications across enterprise environments including Royal Bank of Canada (Canada's largest bank), NETGEAR, and healthcare startups. What I bring to your project: • Native iOS expertise: Swift, SwiftUI, UIKit, Core Data, Watch SDK, Apple Pay, HealthKit • Cross-platform capability: React Native, Ionic — I've shipped on both iOS and Android • Modern architecture: VIPER, MVVM, Clean Architecture, Modular Design • App Store mastery: 50+ apps approved and launched, deep knowledge of the review process • Cloud & backend integration: Firebase, REST APIs, Amazon S3, real-time data sync Recent highlights: → NETGEAR: Designed scalable iOS architectures for smart home and networking apps (3 years) → RBC: Led modularization of Canada's largest mobile banking app serving millions of users (2 years) → Heartface: Built a video-review shopping platform MVP with video recording, playback, and e-commerce → Acuma Health: Developed a healthcare iOS app with Apple Watch integration and HealthKit → PetBooking: Re-architected an entire app from Objective-C to Swift using VIPER I'm based in Toronto, bilingual (English/Portuguese), and available for 30+ hours per week. I value clear communication, clean code, and delivering on time.