Hire the Best Sencha Touch Developers in Hanoi, VN

Are you looking for a Senior Mobile Architect who doesn't just write code, but designs scalable, high-performance architectures, leads engineering teams, and bridges the gap between cross-platform frameworks and Native systems? I am a Senior Software Engineer with 9 years of professional experience, including over 5 years acting as a Mobile Architect and Tech Lead. My core specialization lies in building enterprise-grade React Native and Flutter applications, backed by a deep, production-tested foundation in Native iOS (using Swift) and Android (using Java). Having heavily operated in the Fintech and Banking domains, I excel at turning complex business requirements—such as Customer 360 dashboards, Lead or Campaign pipelines, and high-security eKYC systems—into seamless, secure, and production-ready mobile applications. 🚀 WHY PARTNER WITH ME? Cross-Platform Mastery with Native Performance: I deep-dive into React Native’s New Architecture (Fabric, TurboModules, JSI, and Codegen). If an open-source library doesn’t cut it, I build custom Native Bridges and standalone iOS or Android SDKs from scratch to handle heavy system-level processes. Fintech & Banking Domain Expertise: Extensive experience implementing high-security modules including eKYC via NFC (reading chipped ID cards), asset portfolios, secure data storage, data masking or encryption, and certificate pinning. AI-Driven Development Velocity: I leverage state-of-the-art AI tooling (Claude Code, Cursor, Custom Rules, and MCP to Figma automation workflows) to accelerate development speed by converting designs to clean, scalable code without sacrificing architectural integrity. Proven Leadership & Scalability: As a Tech Lead, I have designed Clean Architectures and Monorepo structures using Nx that reduced UI development time for entire engineering teams by 30 percent. 🛠 TECHNICAL SKILLS & TOOLKIT Cross-Platform & Core RN: React Native (TypeScript and JavaScript), Flutter, Advanced State Management (Zustand, TanStack Query), React Navigation, Reanimated. Native Mobile Engineering: Android (Java), iOS (Swift), Custom Native Modules, Mobile SDK Development (Behavior tracking, Inter-app messaging). Performance Engineering: Memory leak debugging, render optimization (useCallback, useMemo, handling large lists), Hermes engine, high-performance local storage (MMKV). Real-time Capabilities: Enterprise-grade real-time messaging (Social Inbox integration via WebSockets and Socket IO) featuring automated reconnection and state synchronization. Architecture & Infrastructure: Clean Architecture, Shared Component Ecosystems, Monorepos (Nx), Unit Testing (Jest), Firebase Crashlytics. Fullstack Capabilities: Web Frontend (Angular), Backend Ecosystems (NodeJS, Express, and NET). 💼 HIGHLIGHTED PROJECT EXPERIENCE 1. Enterprise Banking App & Customer Data Platform (CDP) Role: Mobile Architect & Tech Lead Impact: Architected the entire core mobile application using Clean Architecture and Nx Monorepos. Engineered an independent Native SDK (Swift and Java) for user behavioral tracking and inter-app communication. Key Features: Designed core banking modules (Leads, Opportunities, Customer 360, Asset Portfolios) and integrated secure eKYC via NFC chip scanning. 2. Real-Time Omnichannel Social Inbox Impact: Developed a real-time communication platform handling customer messages across multiple social channels (Facebook, Instagram, Zalo) via WebSockets, optimizing conversation distribution and offline synchronization. 3. Enterprise CRM Systems Role: Web & Systems Engineer Impact: Built and maintained robust internal backend services using NodeJS and NET, alongside enterprise web portals using Angular, cementing a strong foundation in high-scale systems. 🎓 EDUCATION & QUALIFICATIONS B.S. in Computer Science – Hanoi University of Industry (Good Degree Classification) Whether you need a rock-solid foundation for a brand-new banking application, a rescue mission for a laggy cross-platform app, or a technical leader to guide your mobile strategy, let’s jump on a call and bring your vision to life. Click "Invite to Job" or "Message" to discuss your project!

𝐖𝐞 𝐨𝐟𝐟𝐞𝐫 𝐅𝐑𝐄𝐄 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐚 𝐅𝐑𝐄𝐄 𝐪𝐮𝐢𝐜𝐤 𝐫𝐞𝐯𝐢𝐞𝐰 𝐨𝐟 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭, 𝐚𝐧𝐝 𝐮𝐬𝐮𝐚𝐥𝐥𝐲 𝐫𝐞𝐬𝐩𝐨𝐧𝐝 𝐰𝐢𝐭𝐡𝐢𝐧 𝐚 𝐟𝐞𝐰 𝐡𝐨𝐮𝐫𝐬. We are Teaser Software, an ITO company based in Hanoi, Vietnam. If you’re looking for a reliable team to take your project from idea → design → development → launch → maintenance, while leveraging AI to accelerate development and improve efficiency without compromising quality, you’re in the right place. Whether you already have a detailed specification or just an initial idea, we can help shape it into a clear roadmap with realistic timelines and costs. 𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭. 𝐉𝐮𝐬𝐭 𝐬𝐞𝐧𝐝 𝐮𝐬 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐚𝐧𝐲𝐭𝐢𝐦𝐞. 𝐖𝐞 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐚𝐜𝐫𝐨𝐬𝐬 𝐦𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐭𝐢𝐦𝐞 𝐳𝐨𝐧𝐞𝐬, 𝐬𝐨 𝐨𝐮𝐫 𝐭𝐞𝐚𝐦 𝐢𝐬 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝟐𝟒/𝟕, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠 𝐰𝐞𝐞𝐤𝐞𝐧𝐝𝐬.

Hello, I’m an Embedded Firmware & Hardware Engineer with solid experience in developing IoT, automation, and wireless systems. I specialize in low-level firmware design, communication protocol integration, and user interface development, combined with practical hardware design and testing. My goal is to deliver robust, efficient, and production-ready solutions tailored to your needs. 🔧 Key Experience ► Embedded firmware design: Bare-metal & RTOS (C/C++) ► Board bring-up, debugging & validation ► Hardware schematic & PCB design (analog, digital, mixed-signal) ► Parts selection, BoM creation & manufacturing file preparation ► Power supply design: DC-DC (buck/boost), linear regulators ► Documentation & source code management 🛠 Microcontrollers & Platforms ► STM32 (Cortex-M0+/M3/M4/M7) ► ESP32, ESP8266 ► nRF52 series ► Holtek, PY32, MG82F6D17 ► Arduino, Raspberry Pi 🔗 Interface Protocols ► UART, SPI, I2C, RS485 ► QUADSPI, ADC, DAC ► USB 2.0, USB 3.0 📡 Wireless & Communication ► Wi-Fi, BLE (Bluetooth Low Energy) ► Ethernet, 4G/LTE ► LoRa, LoRa Mesh, LoRaWAN ► NFC, RF Modules, Power Amplifiers 📺 Displays & Modules ► UI development with LVGL on TFT Touchscreens ► LCD, OLED Displays ► Sensor integration (temperature, GPS, ultrasonic, laser) ⚡ Hardware & PCB Design ► Multi-layer PCB design (1–6 layers) ► Impedance-controlled routing, high-speed interfaces ► Mixed-signal circuit design (ADC/DAC, filters, amplifiers) ► Motor control: BLDC, Stepper, Servo, DC ► RF & antenna design basics 🏆 What I Deliver ✔️ Reliable embedded firmware (C/C++) with efficient drivers & protocols ✔️ Robust, manufacturable hardware designs ✔️ End-to-end IoT & embedded solutions (from prototype to production) 🤝 Let’s work together to turn your embedded system ideas into scalable, reliable products.

🚀 Ranked #1 iOS Developer on Upwork in Vietnam 🇻🇳 Trusted by startups and growing businesses to build, launch, and scale native iOS apps With 9+ years of experience in Apple development, I've helped startups, SaaS companies, and growing businesses transform ideas into high-quality native iOS applications used by thousands of users. Whether you're launching a new product, modernizing an existing app, or bringing your Android/Web platform to iOS, I deliver scalable, maintainable solutions with clean architecture and an exceptional user experience. What I can help your business with - End-to-end iOS app development - Native iOS apps using Swift & SwiftUI - Convert Android/Web apps into iOS apps - MVP development for startups - Long-term product maintenance & scaling - Performance optimization & refactoring - UI/UX implementation with pixel-perfect accuracy - App architecture improvement & technical consulting - Team collaboration and Agile/Scrum workflow Technical Expertise - UI Development: UIKit, SwiftUI, Auto Layout, Core Animation - Reactive Programming: RxSwift, Combine - Networking & API Integration: RESTful APIs, URLSession, Alamofire - Backend & Cloud Services: Firebase, Firestore, Authentication, Analytics - Push Notifications: APNs, Firebase Cloud Messaging (FCM), OneSignal - Architecture Patterns: MVVM, Clean Architecture, Modular Architecture - Local Storage & Database: CoreData, UserDefaults, Realm - Media & Realtime Features: AVFoundation, WebSocket - AI & AR Features: CoreML, ARKit, Vision Framework - Authentication & Security: OAuth, JWT, Keychain - Maps & Location Services: MapKit, CoreLocation, Google Maps SDK - Testing & Debugging: XCTest, Instruments, Memory Leak Detection - CI/CD & Version Control: Git, GitHub, Fastlane, Xcode Cloud - Project Management: Agile, Scrum, Jira, Trello Why clients work with me - 9+ years of professional iOS experience - Successfully launched and maintained production apps - Strong focus on clean, maintainable, scalable code - Clear communication and reliable delivery - Experience collaborating with startups and remote teams - Detail-oriented with strong debugging and problem-solving skills - Long-term partnership mindset I care about building stable products that support real business growth — not just writing code. If you’re looking for a reliable iOS engineer to build, improve, or scale your mobile product, let’s connect.

I am a cross-platform application developer specializing in comprehensive solutions for iOS, Android, and Web platforms. My technical expertise includes: Technical Skills: - Mobile development: Flutter, React Native (iOS & Android), watchOS (Apple Watch) - Web development: React - Database management: Firebase, MySQL, PostgreSQL, MongoDB - API and real-time services development - Advanced GIS solutions: geographic data processing, custom map development - Map integration and customization (Google Maps, Mapbox, OpenStreetMap) - AI integration: OpenAI API, chatbot development, AI-powered features - Smart automation & AI-assisted workflows - Apple ecosystem development: SwiftUI, Watch Connectivity, Apple Watch companion apps Deployment & Publishing: - Web deployment on AWS - App Store and Google Play publishing - Apple Watch app deployment & integration - ASO optimization for both platforms - CI/CD pipeline management for automated deployment Work Approach: - Project progress updates at least every 3 days - Minimum 1-month free support after project handover - High focus on preparation and testing phase (70% of project importance) - Intensive communication during initial project phase - Effective independent work and team collaboration You can see that I focus most heavily on the initial and handover phases of projects, as client satisfaction is my top priority. More importantly, I provide regular project progress reports to ensure maximum client confidence.

I’m always happy to collaborate—feel free to reach out if you have any iOS projects! I'm a developer with experience in building mobile app for small and medium sized. I’m experienced in Swift and SwiftUI, Flutter, React-native, UIKit, Alamofire, Core Data, Realm, RxSwift, Combine, SwiftUI I’ll fully project manage your brief from start to finish