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📱 Mobile Developer(Flutter/iOS) | Building Mobile Solutions That Scale ⭐⭐⭐⭐⭐ Whether you're a startup founder launching your first app, a business owner scaling your mobile presence, or a team building the next big platform, I bring the technical expertise to transform your vision into a high-performance, user-loved mobile application ready for the App Store. With over 10 years of hands-on Mobile development, I've delivered 20+ successful projects that don't just work—they drive real business results. I combine deep technical knowledge with exceptional communication skills, ensuring seamless collaboration from concept to launch. I'm committed to solving your toughest mobile challenges efficiently in these areas: 📱 𝐂𝐎𝐑𝐄 𝐅𝐋𝐔𝐓𝐓𝐄𝐑 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄 • Flutter 3.x & Dart • Objective-C, Swift, SwiftUI • Cross-platform iOS & Android development • Responsive web applications • Material Design & Cupertino widgets • Custom UI/UX implementation • Pixel-perfect designs 🏗️ 𝐒𝐓𝐀𝐓𝐄 𝐌𝐀𝐍𝐀𝐆𝐄𝐌𝐄𝐍𝐓 & 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 • BLoC Pattern • Provider • Riverpod • GetX • Clean Architecture • MVVM • Repository Pattern • Scalable app structure for long-term maintainability 🔗 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 & 𝐈𝐍𝐓𝐄𝐆𝐑𝐀𝐓𝐈𝐎𝐍 • Firebase (Auth, Firestore, Cloud Functions, FCM, Analytics) • REST APIs • GraphQL • WebSocket for real-time features • Third-party SDK integration • API design & implementation 💳 𝐏𝐀𝐘𝐌𝐄𝐍𝐓 & 𝐌𝐎𝐍𝐄𝐓𝐈𝐙𝐀𝐓𝐈𝐎𝐍 • Stripe • PayPal • In-App Purchases (iOS & Android) • Subscription models • Payment gateway integration • Secure transaction handling ⚡ 𝐏𝐄𝐑𝐅𝐎𝐑𝐌𝐀𝐍𝐂𝐄 𝐎𝐏𝐓𝐈𝐌𝐈𝐙𝐀𝐓𝐈𝐎𝐍 • App performance profiling & optimization • Memory management • Lazy loading & caching strategies • Reducing app size • Smooth 60fps animations • Offline-first architecture with local storage 💾 𝐃𝐀𝐓𝐀𝐁𝐀𝐒𝐄 & 𝐒𝐓𝐎𝐑𝐀𝐆𝐄 • SQLite • Hive • Drift (Moor) • SharedPreferences • Secure storage • Cloud Firestore • Realm • Data encryption & security best practices 🔔 𝐑𝐄𝐀𝐋-𝐓𝐈𝐌𝐄 𝐅𝐄𝐀𝐓𝐔𝐑𝐄𝐒 • Push notifications (FCM, OneSignal) • Live chat & messaging • Real-time data sync • WebSocket connections • Socket.io integration 🧪 𝐓𝐄𝐒𝐓𝐈𝐍𝐆 & 𝐐𝐔𝐀𝐋𝐈𝐓𝐘 𝐀𝐒𝐒𝐔𝐑𝐀𝐍𝐂𝐄 • Unit testing • Widget testing • Integration testing • Automated testing with CI/CD • Code coverage • Comprehensive testing before deployment 🚀 𝐃𝐄𝐏𝐋𝐎𝐘𝐌𝐄𝐍𝐓 & 𝐃𝐄𝐕𝐎𝐏𝐒 • App Store & Play Store submission • TestFlight & Firebase App Distribution • CI/CD with GitHub Actions, Codemagic, Bitrise • Version management • Beta testing coordination 🎯 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐘 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 Successfully delivered apps across: • E-commerce & Retail • Fintech & Banking • Healthcare & Telemedicine • Food Delivery • Social Networking • On-Demand Services • Enterprise Solutions • Educational Platforms 💼 𝐏𝐑𝐎𝐕𝐄𝐍 𝐑𝐄𝐒𝐔𝐋𝐓𝐒 • 98% client satisfaction with zero missed deadlines • Apps generating $2M+ combined revenue for clients • 40-60% cost savings through efficient cross-platform development • Average 4.8+ app store ratings on delivered projects • 15+ successful projects across iOS and Android 🤝 𝐌𝐘 𝐀𝐏𝐏𝐑𝐎𝐀𝐂𝐇 I don't just code I collaborate. From initial concept to App Store launch, I work closely with clients to ensure their vision becomes a polished, scalable product. Clean code, thorough testing, and clear communication are non-negotiable in my process. I bring not only technical depth but also Agile methodology expertise, delivering projects on time while maintaining the highest quality standards. 📌 Available for hourly, fixed-rate, and ongoing B2B, B2C, and SaaS engagements. 🎯 Ready to transform your app idea into a profitable reality today. 🌍 Countries Collaborated With: 🇺🇸 United States | 🇨🇦 Canada | 🇬🇧 United Kingdom | 🇦🇪 United Arab Emirates | 🇩🇪 Germany | 🇫🇷 France | 🇦🇺 Australia | 🇸🇬 Singapore | 🇻🇳 Vietnam...

For more than 11 years in mobile development, I have joined many projects, including ongoing and from scratch. With my skills, I can work as a Developer, Team Leader, and Project Manager. As a project manager, I communicate with clients directly, receive requirements, do business analysis, and estimate the time needed for the project. Setting up a mobile, backend, and frontend team to do the task. I decide to become a freelancer to join more and more projects, discover new technologies, and connect with clients worldwide. I am a good candidate for any client who wants the app to succeed. Some domains I have worked on: - Food and Beverage - eLearning - Health care system - Booking - Real estate - Fintech - ECommerce - ... My skill sets include: * Project management: I do Business Analyst, team management * Mobile native: Android, iOS (Swift) * Cross-platform: Flutter, React Native and Xamarin * Database: SQLite, SQL, Parse, Firebase Storage, Mongo DB Knowledge: * ReactJS. * WordPress * Angular * Java Spring Boot Project Management Software and Tools - Jira - Redmine - Trello

Hi, I'm Paul. Transforming complex tech ideas into market-ready products is my forte. With 8 years of hands-on experience, I offer end-to-end expertise in advanced PCB design, rapid prototyping, and robust firmware development for IoT, robotics, and ultra-low power applications. My background as a startup team leader ensures a product-centric vision and accelerated project/ MVP delivery. 1. What I Offer: End-to-End Embedded & Hardware Solutions - Advanced PCB Design & Hardware Development: Multi-layer PCBs for complex applications, focusing on reliability and performance. - High-Speed Design: Expertise in USB 2.0, HDMI 2.0, DDR3/DDR4/LDDR4, PCIe, NAND Flash, 10/100/1000/10Gbase-T1 Ethernet, PoE++. - Microcontrollers & SoMs: ARM Cortex-M3/M4 (STM32WL, ESP32, Nordic nRF52/53/91 series); custom boards for Raspberry Pi CM4, Orange Pi, iMX8, Jetson Nano/Xavier/Orin, RK3588, RK3568, RV1126, TI AM6254. - Power & Analog: DC-DC (Flyback, Boost, Buck, LDOs), motor control (BLDC, AC/DC servo via I/O, ADC, CAN), high-resolution ADC/DAC, Audio circuits. DFM/DFA & Compliance: Strong knowledge of manufacturing, assembly processes, and layout techniques for EMC/EMI compliance. - Tools: Altium Designer (Altium365/CircuitMarker), KiCAD, Eagle, EasyEDA; OrCAD, PSpice, CAM350. - Prototyping: Experience with BOM creation (Digikey/Mouser/JLCPCB) and combining dimensional drawings into precise Gerber formats. - CAD/3D design tool: SolidWorks, Inventor... 2. Robust Firmware Development: - Languages: C, C++, Python, Qt. IoT & Wireless: MQTT, Thingsboard, AWS IoT, Blynk; experience with RF, Wi-Fi, BLE, GSM (3G/4G/LTE), LoRaWAN. - Robotics: Expertise in ROS/ROS2 for applications like AGV, AMR, 6-axis robots. Low-level Interaction: Proficient in designing custom drivers, managing communication protocols (QSPI, I2C, RS485, RS232, CAN, Modbus TCP/IP/RTU). - UI/UX for Embedded: Figma, TouchGFX, LVGL for STM32, ESP32, Raspberry Pi. 3. Product & Project Leadership: - Startup Leadership: Proven ability to lead and manage cross-functional teams in startup environments. - Project Management: Expertise in managing design, fabrication, and procurement for cost-efficient and timely PCB acquisition. - Problem-Solving & Research: Strong initiative, research capabilities, and excellent troubleshooting skills for electrical evaluation, testing, and PCB issues. 4. Why Partner with Me? - End-to-End Product Vision: My background in leading startup projects provides a holistic view, ensuring your solution is not just technically sound but also viable and market-ready. - Deep Technical Mastery: From complex high-speed routing and power supply design to robust firmware for robotics and IoT, I handle intricate challenges with precision. - Cost & Time Efficiency: My knowledge of DFM/DFA and experience in optimizing BOMs, coupled with efficient procurement management, helps streamline your project and reduce overall development costs and time. Ready to turn your innovative idea into a high-quality product? Let's connect to discuss how my expertise can drive your project's success.

I am a mobile app developer focused on building production ready applications using 𝙍𝙚𝙖𝙘𝙩 𝙉𝙖𝙩𝙞𝙫𝙚 and 𝙁𝙡𝙪𝙩𝙩𝙚𝙧. I specialize in 𝙁𝙞𝙣𝙩𝙚𝙘𝙝 and 𝙇𝙤𝙜𝙞𝙨𝙩𝙞𝙘𝙨 apps where reliability, real time data, and system stability are critical. I have worked on mobile products that go beyond UI development and deal with real world complexity such as payment flows, live tracking systems, offline usage, background sync, and performance optimization under unstable network conditions. My goal is to build mobile apps that are stable, scalable, and ready for real users from day one. I mainly work with clients from the United States, United Kingdom, Canada, and Australia. I can easily align with your timezone to ensure smooth communication and fast iteration during development. 🏦 Fintech Applications I build mobile finance systems that require accuracy, security, and consistency. Challenges I solve include 🔻 Preventing duplicate transactions in unstable network conditions 🔻 Building real time wallet and balance updates without UI issues 🔻 Integrating Stripe and payment systems with backend reconciliation 🔻 Secure authentication and role based access flows 🔻 Designing simple dashboards for complex financial data The result is stable fintech applications that handle sensitive operations with confidence. 🚚 Logistics and Mobility Applications I build apps focused on real time tracking, movement, and operational workflows. Challenges I solve include 🔻 Live GPS tracking with optimized battery usage 🔻 Real time driver and delivery status synchronization 🔻 Offline functionality for low connectivity environments 🔻 Map performance optimization using Google Maps SDK 🔻 Background location tracking without crashes or delays The result is reliable logistics systems used in real operational environments. ⚙️ Tech Stack ∘ React Native ∘ Flutter ∘ Node.js ∘ Express ∘ FastAPI ∘ Firebase Authentication ∘ Firestore ∘ Cloud Messaging ∘ Supabase PostgreSQL ∘ Supabase Edge Functions ∘ Stripe Payments ∘ Google Maps SDK ∘ REST APIs ∘ GraphQL APIs ∘ Git and CI CD ∘ App Store and Play Store deployment 🧠 How I Work Most mobile apps fail because of poor data flow, unstable backend integration, or missing edge case handling. My approach focuses on Designing data flow before UI Building strong API integration structure Handling offline and failure cases early Optimizing performance during development, not after launch Ensuring stable user experience under real usage conditions 🌍 Clients I Work With I work with startups and businesses building serious mobile products, especially in fintech and logistics domains. Most of my clients are based in - United States - United Kingdom - Canada - Australia - Germany ⏰ Timezone I can align with your timezone to ensure smooth communication, quick feedback cycles, and efficient collaboration throughout the project. 🚀 What You Get - Production ready mobile applications - Clean and scalable architecture - Strong performance and reliability focus - Fast and clear communication - Long term maintainable codebase 💪 Interested in working together? Feel free to click the Message button. Let’s discuss your project goals and see how I can help you build a reliable and scalable solution. 🔎 Upwork SEO Keywords mobile app developer, React Native developer, Flutter developer, fintech app developer, logistics app developer, GPS tracking app developer, real time mobile app, Firebase developer, Supabase developer, Node.js backend developer, cross platform mobile apps, iOS Android developer, Stripe integration, payment app developer, mobile app architecture, offline first mobile app, Google Maps integration, fleet management app, delivery tracking app, mobile API integration, scalable mobile apps, push notifications Firebase Cloud Messaging, backend integration mobile apps

I am a dedicated Software Engineer with experience in developing mobile applications for iOS and Android, using both native technologies and cross-platform frameworks like Flutter, React Native. My background includes working on backend systems with Django, Node.js, serverless, and utilizing AWS for cloud infrastructure. I have a growing interest in Generative AI and Large Language Models (LLMs), and I've been exploring ways to integrate these technologies into applications to enhance natural language processing capabilities. Throughout my career, I've focused on delivering reliable and efficient solutions, always striving to write clean, optimized code. I enjoy staying informed about new developments in the tech industry and applying this knowledge to my work. I work well both independently and as part of a team, and I value clear communication in collaborative environments. I'm eager to contribute my skills to innovative projects and continue learning in this ever-evolving field.

ROBOTICS SOFTWARE ENGINEER With 5 years working in Robotics application, I specialize in developing motion control, localization and object detection applications. I have strong understanding in C++ and Python. Also, I have an insight about robotics architecture in term of hardware as well as software. Additionally, I could also know other frameworks such as QT, Nodejs. I have experience with ROS, ROS 2, Gazebo, MoveIt, PCL, Qt, Open3D, C++, Python.