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Expert-Vetted on Upwork — top 1% of freelancers. 36 jobs, 3,753 hours, 100% job success. I'm the person you bring in to decide what to build, then build it. Six years in the Bay Area from early startups to Zynga and brightwheel, and since then running architecture and delivery for clients here. Most of my work falls into three buckets: Technical direction. You have a budget, a deadline and five opinions about the stack. I scope it, pick the architecture, tell you what to cut, and own the plan. Fractional CTO work for founders without one, and architecture review for teams who have one but want a second read before committing. AI & automation. LLM agents, RAG over private data, workflow automation, API integrations. Recent example: a finance system that pulls from banking APIs, categorizes every transaction, and produces P&L, balance sheet and cash flow. Reconciles to the accountant's books to the penny across 4,300+ transactions and runs unattended daily. Build. React, Next.js, TypeScript, Node, Python, Postgres, Supabase, AWS on the web side. React Native, Swift and Kotlin on mobile — I built the app for a VC-backed company now valued over $300m, and apps that have ranked top 20 in their categories. I also take rescues: inherited codebases, stalled projects, "it works but it's slow", and code review before you commit to a direction. How I work: give me the goal and the constraints and I'll run with it. No hand-holding, no status theater. And I'll tell you when something is a bad idea before you pay to build it.

Why should you hire me? I am a Principal / Lead Software Engineer and Technical Architect with over 20 years of exceptional software engineering experience, specializing heavily within the native Android ecosystem. Over the past two decades, my focus has been driving full-lifecycle product development, scaling critical architectures, and leading high-performing engineering teams to align technical delivery with enterprise business goals. Currently, I lead the Membership 1P Benefits Android team at Walmart-Lab, architecting core feature sets for the high-impact Walmart+ subscription mobile platform. My career history includes engineering critical, high-security financial modules for Bank of America, building mission-critical IoT Bluetooth medical integrations for Abbott Lab's world-leading continuous glucose monitoring platform, and developing mass-scale commerce engines for FISERV and connected car software for Telenav. My technical approach is rooted in an unyielding commitment to clean code patterns, SOLID design principles, modular MVVM architecture, and rigorous Test-Driven Development (TDD) to ensure codebases remain scalable and highly maintainable. As a leader, I pride myself on bridging the gap between product strategy and engineering execution. I have a proven track record of guiding, mentoring, and scaling distributed teams (up to 12 onshore/offshore engineers), cultivating collaborative team environments, and streamlining Agile workflows to accelerate delivery times. 🧠 Core Competencies & Leadership: Technical Team Leadership | Agile/Scrum Frameworks | Mobile Architecture | Full SDLC Management | Cross-Functional Alignment | Resource Estimation & Scoping 🛠️ Technical Expertise: Languages: Kotlin, Java, C#, Angular, XML, JSON Android Architecture: Android SDK, Android Architecture Components, Jetpack Navigation, MVVM, MVP, SOLID Principles APIs & Data Integration: GraphQL, Retrofit, RESTful Web Services, RxJava, Dependency Injection (Dagger), Volley, GCM Data Management: Couchbase DB, SQLite, MS SQL Server, Oracle, MySQL Quality Assurance: Test-Driven Development (TDD), JUnit, Robolectric, Espresso, Appium, LeakCanary Let's connect to discuss native Android architecture, agile team leadership, or building elite, high-performing mobile engineering organizations.

Top 1% Mobile App Developer on Upwork | Flutter, iOS & Android | AI-Powered Apps | 100% Job Success 𝗧𝗶𝗿𝗲𝗱 𝗼𝗳 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽𝘀 𝘁𝗵𝗮𝘁 𝗰𝗿𝗮𝘀𝗵 𝘂𝗻𝗱𝗲𝗿 𝗿𝗲𝗮𝗹 𝘂𝘀𝗲𝗿𝘀, 𝗼𝗿 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿𝘀 𝘄𝗵𝗼 𝗱𝗶𝘀𝗮𝗽𝗽𝗲𝗮𝗿 𝗺𝗶𝗱-𝗽𝗿𝗼𝗷𝗲𝗰𝘁? I have solved that exact problem for 60+ founders and businesses. My clients launch apps that hold up on Day One, clean Flutter/native code, App Store & Google Play ready, and AI features that actually work. 100% Job Success, Top Rated, 9+ years of experience, 30+ apps live in the market. ━━━━━━━━━━━━━━━━━━━━━━━━ 🎯 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 ━━━━━━━━━━━━━━━━━━━━━━━━ ▸ FULL-CYCLE MOBILE APP DEVELOPMENT From idea to App Store/Play Store launch. Flutter, Android, and iOS apps built for real users from day one. ▸ CROSS-PLATFORM APPS (FLUTTER + REACT NATIVE) One codebase, native performance on both iOS and Android. Faster delivery without sacrificing quality. ▸ NATIVE ANDROID & iOS DEVELOPMENT Platform-specific builds when performance or deep OS integration matters most. ▸ AI-POWERED MOBILE APPS OpenAI API integration for smart features chat, recommendations, automation implemented cleanly, no over-engineering. ▸ ON-DEMAND & MARKETPLACE APPS Ride booking, food delivery, real estate listing, e-commerce Uber/Airbnb-style apps built end-to-end. ▸ BACKEND & API DEVELOPMENT Node.js, Python (FastAPI/Flask/Django), REST & GraphQL APIs, connected to Firebase, MySQL, MongoDB, or your stack of choice. ▸ CODE AUDIT & APP STABILIZATION Inherited a buggy app? I audit performance, crashes, and architecture, then deliver a fix plan fast. ━━━━━━━━━━━━━━━━━━━━━━━━ 💬 𝗖𝗟𝗜𝗘𝗡𝗧 𝗙𝗘𝗘𝗗𝗕𝗔𝗖𝗞 ━━━━━━━━━━━━━━━━━━━━━━━━ Review 1: Great experience working with Murtaza Moiz on our mobile app project. He's skilled in Flutter, Dart, Node.js, and API Integration, and delivered clean, functional code on time. Communication was smooth, and he was open to feedback. Highly recommended for Mobile App Development. Review 2: Murtaza Moiz is professional and responsive, with strong skills in Cross Platform and iOS/Android App Development using Flutter. He delivered a well-designed app with smooth UI and RESTful API integration, even adding some AI features. ━━━━━━━━━━━━━━━━━━━━━━━━ 🏆 𝗖𝗥𝗘𝗗𝗘𝗡𝗧𝗜𝗔𝗟𝗦 ━━━━━━━━━━━━━━━━━━━━━━━━ - Top 1% Talent on Upwork Mobile App Development - 100% Job Success, 60+ Projects Delivered - 30+ Apps Live on App Store & Google Play - 9+ Years of Experience - AI Mobile App Development (OpenAI Integration) ━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 𝗛𝗢𝗪 𝗪𝗘 𝗦𝗧𝗔𝗥𝗧 ━━━━━━━━━━━━━━━━━━━━━━━━ ✉️ MESSAGE ME ON UPWORK Have a mobile app idea, or an existing app that needs fixing? Message me for a free consultation and a clear plan to launch faster. How I Work Full-cycle mobile apps in Flutter, Android, iOS, with clean backend and API integration. Figma designs turned into pixel-perfect UI, progress tracked in Jira/Trello, communication through clear updates, and delivery with long-term support after launch. ━━━━━━━━━━━━━━━━━━━━━━━━ 🛠️ 𝗧𝗢𝗢𝗟𝗦 & 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗬 ━━━━━━━━━━━━━━━━━━━━━━━━ Mobile Development Flutter, Dart, React Native, Android (Kotlin/Java), iOS (Swift) Backend & Databases Node.js, Python (FastAPI, Flask, Django), Firebase, Firestore, MySQL, MongoDB, SQLite APIs & Integrations REST API, GraphQL, OpenAI API, Firebase Cloud Functions Cloud & Deployment AWS, Google Cloud, Firebase Design & Collaboration Figma, Adobe XD, Material Design, Cupertino Widgets, Git, GitHub, GitLab, Bitbucket, Jira, Trello Solutions Delivered Ride/Booking Apps, Real Estate Apps, Social Media Apps, Sports Apps, Food Delivery Apps, E-commerce Apps, Learning Management Apps, Appointment Booking Apps, CRMs, On-demand Apps Mobile App Developer, Flutter Developer, iOS Developer, Android Developer, AI Mobile App Development, Cross-Platform App Development 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: Flutter, Dart, OpenAI API, Full Stack Developer, Back End Developer, API Integration, Node.js, SQL, Mobile App Development, Mobile App Developer, Android App Development, Android App Developer, AI Mobile App Development, AI Mobile App Developer, Mobile App Design, Mobile App UI Design, Responsive Design, UI/UX Designer, Prototyping, Mobile App API Integration, iOS App Developer, iOS App Development, Hybrid App Development, Cross Platform App Development, Express.js, RESTful API, Machine Learning App Integration, Senior Mobile App Developer, Software Designer #Flutter #Dart #OpenAIAPI #FullStackDeveloper #BackEndDeveloper #APIIntegration #Nodejs #SQL #MobileAppDevelopment #MobileAppDeveloper #AndroidAppDevelopment #AndroidAppDeveloper #AIMobileAppDevelopment #AIMobileAppDeveloper #MobileAppDesign #MobileAppUIDesign #ResponsiveDesign #UIUXDesigner #Prototyping #MobileAppAPIIntegration #iOSAppDeveloper #iOSAppDevelopment #HybridAppDevelopment #CrossPlatformAppDevelopment #Expressjs #RESTfulAPI #MachineLearningAppIntegration #SeniorMobileAppDeveloper #SoftwareDesigner

Top Rated Plus developer with a 100% Job Success Score specializing in high-performance Android (Kotlin/Jetpack Compose) and iOS (Swift/SwiftUI) applications. I provide a competitive edge by integrating on-device AI - from custom fine-tuned YOLO models for real-time detection to local LLM integration for intelligent UX. Simultaneously, I offer expert-level React Native development for clients seeking high-intensity, scalable cross-platform solutions. I bridge the gap between complex AI logic and polished mobile UX. A recent production success includes a YOLO-based scanning app achieving a 100% detection rate and 99% OCR accuracy via TensorFlow Lite. Technical Expertise: - On-Device AI & Vision: Expert in custom YOLO, OpenCV, and Google ML Kit for real-time scanning and on-device LLM features. - Native Excellence: Senior-level SwiftUI and Jetpack Compose development focusing on clean MVVM/MVI architecture. - High-Intensity React Native: Building robust cross-platform apps with seamless native-module integrations and high-performance UI. - Backend & Cloud: Scalable infrastructure using AWS Lambda, Firebase, Supabase, GraphQL, and REST APIs. - Growth & Revenue: Integration of MMPs (AppsFlyer, Adjust) and analytics (Mixpanel, Customerio) to track revenue and user behavior. - Modernization: Expert at migrating legacy codebases to modern frameworks and optimizing app performance. I lead projects from the first line of code to App Store/Google Play deployment, ensuring every app I ship is production-ready, performant, and data-informed.

A Flutter and React Native developer with 7+ years building cross-platform iOS and Android apps, AI-powered SaaS platforms, and BLE-connected IoT apps that ship, scale, and generate real results. 17+ live apps shipped. 10M+ users reached. $8.5M+ in startup funding secured through AI-powered MVPs. 100% Job Success Score. If you need a mobile app developer, AI engineer, or full stack developer who delivers without excuses keep reading. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📱 MOBILE APP DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Flutter Developer — cross-platform iOS & Android from a single codebase ✅ React Native Developer — cross-platform mobile apps ✅ Native iOS — Swift, SwiftUI ✅ Native Android — Kotlin, Jetpack Compose ✅ Offline-first architecture, real-time sync, WebSockets ✅ In-app purchases, Stripe, PayPal & payment gateway integration ✅ App Store & Google Play deployment, TestFlight, Fastlane CI/CD ✅ Pixel-perfect UI/UX from Figma Redux Toolkit, Zustand, Bloc, TanStack Query ✅ Push notifications, deep linking, camera, video, audio & chat Apps shipped: → Opty Sleep — AI-powered sleep optimization (health & wellness) → Chaser the Network — social platform scaled to thousands of active users → Medalite — BLE-connected LED light therapy mask controller (Flutter + ESP32) → Race Command — real-time motorsports command app (in progress) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔵 BLE & IoT MOBILE APPS (Rare Skill Set) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Most mobile developers cannot build apps that talk to hardware. I can. ✅ Bluetooth Low Energy (BLE) SDK integration in Flutter & React Native ✅ ESP32 firmware communication via BLE ✅ NFC, AR, and real-time IoT monitoring & control apps ✅ Hardware-connected medtech and wellness apps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🤖 AI ENGINEER & GENERATIVE AI DEVELOPER ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ ChatGPT integration — GPT-4, GPT-4o API ✅ Generative AI app development ✅ AI chatbot development — customer support, internal tools, SaaS ✅ OpenAI, Claude (Anthropic), Gemini & Groq API integration ✅ Prompt engineering & fine-tuning ✅ LangChain & LlamaIndex — RAG pipelines, AI agents, vector search ✅ pgvector & Pinecone for semantic vector databases ✅ AI automation — n8n, Make, Zapier ✅ AI-powered MVP development for funded startups ✅ No-code AI tools — Cursor AI, v0 by Vercel, Bolt New, Lovable ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🌐 FULL STACK DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Frontend: React.js, Next.js 15 (App Router, SSR/SSG, Server Components), TypeScript, Angular, Vue.js, Nuxt.js, Tailwind CSS, Framer Motion Backend: Node.js, NestJS, Express.js, FastAPI, Django, Flask, Java Spring Boot, Laravel APIs: RESTful API, GraphQL with Apollo, WebSockets with Socket IO, event-driven microservices Databases: PostgreSQL (pgvector), MongoDB, Firebase (Realtime DB + Firestore), MySQL, Redis, SQLite Cloud & DevOps: AWS (EC2, S3, Lambda, SageMaker), GCP, Azure, Docker, Kubernetes, GitHub Actions, Jenkins CI/CD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🏭 INDUSTRIES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Healthcare & MedTech | Fintech | IoT & Firmware | E-commerce | Real Estate | Entertainment | Fitness & Wellness | Social Networking | EdTech | Automotive | SaaS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🤝 HOW I WORK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ → Milestone plan agreed before any code is written → Weekly written memos — what's done, what's next, what needs your input → 48-hour response guarantee — I never go silent mid-project → Billing breakdowns at every milestone — zero invoice surprises → 30+ hours/week availability | Fluent English ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 LET'S BUILD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Startup building an AI-powered MVP? Business scaling a mobile platform? Hardware company that needs a BLE-connected app? Click Invite to Job let's talk.

Hi, I’m Jorge, a senior mobile app developer with over 10 years of experience building scalable, user-friendly apps for some of the world’s most recognized brands, including GrubHub, Subway, Wendy’s, and even NASA. Whether you need a custom app or a quick-to-market solution, I specialize in delivering cross-platform apps using Flutter, FlutterFlow, Kotlin, Swift, and native Android/iOS technologies. What I Bring to Your Project 1️⃣ Enterprise-Grade Expertise I’ve delivered apps for Fortune 500 companies that handle millions of users daily, with features like API integrations, real-time tracking, and payment gateways. My past work includes restaurant apps, healthcare solutions, and educational tools. 2️⃣ Cutting-Edge Features From geolocation and AI-powered functionality to secure payment systems and ADA compliance, I build apps that are intuitive, secure, and performant. I’ve developed: Real-time tracking systems (Washly - on-demand car wash app). QR code and payment verification (GrubHub Enterprise SDK). AI-powered micro-learning experiences (MindGarden - gamified learning app). 3️⃣ Seamless Integration and Scalability I ensure apps are built to scale, working seamlessly with Firebase, AWS, MongoDB, and more, so your app grows with your business. What You’ll Get Working With Me 🚀 End-to-End App Development: I handle everything from concept to post-launch support. You only need to provide feedback and focus on your business goals. 🚀 Clear Communication: I explain technical concepts in simple terms and provide regular updates. 🚀 Proven Reliability: I deliver on time and on budget, with a track record of 100+ completed apps and repeat clients. How I Set You Up for Success I work collaboratively to ensure your app aligns with your vision and achieves your goals. I streamline development so you receive a high-quality app quickly and stress-free. I prioritize security and performance, building apps that users love and trust. Let’s Build Something Great I’m here to help you create an app that stands out, connects with your audience, and drives results. Invite me to your project or send a message to discuss how we can work together.