⌛𝙂𝙚𝙩 𝙍𝙚𝙨𝙥𝙤𝙣𝙨𝙚 𝙒𝙞𝙩𝙝𝙞𝙣 15 𝙈𝙞𝙣𝙪𝙩𝙚𝙨⌛ ✅ 𝗘𝗫𝗣𝗘𝗥𝗧 𝗠𝗢𝗕𝗜𝗟𝗘/𝗪𝗘𝗕 𝗔𝗣𝗣 𝗙𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲𝗿 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸, specializing in Clone the App, Web to App convertion , & Sketch to App maintenance. I have worked with 🌟High Profile Clients/Organizations from different time zones🌟 in my Career, including the following Technologies which I have worked: ✅ REACT-NATIVE ✅ CORDOVA ✅ REACT.JS ✅ IONIC ✅ FRAMEWORK7 ✅ XMPP chat application, ✅ Firebase Push Notification, ✅ Admob and Adsense APIs, ✅ Google Map, ✅ Payment Integration, ✅ Scanner APIs, ✅ Camera APIs, ✅ Video/Audio Streaming, ✅ Bluetooth API Etc…. My motive is to provide you the excellent services, with timely and accurate mobile application development by using the skills that I have been working for the past 8+ years. I am experienced in both Hybrid and Native mobile applications development. And I provide high-quality work with accurate requirements. I have a very strong background in developing scalable Mobile applications and Website development. My hands-on experience with developing applications for the web and mobile makes me very effective in communicating between technical and non-technical persons. 🌟 WHY CHOOSE ME OVER OTHER FREELANCERS? 🌟 ✅ Client Reviews: I focus on providing VALUE to all of my clients and earning their TRUST. The client Reviews and Feedback on my profile are immensely important to me and the value that I provide. ✅ Responsiveness: Being extremely responsive and keeping all lines of communication readily open with my clients. ✅ Resilience: Reach out to any of my current or former clients and ask them about my Resilience. Any issue that my clients face, I attack them and find a SOLUTION. ✅ Kindness: One of the biggest aspects of my life that I implement in every facet of my life. Treating everyone with respect, understanding all situations, and genuinely wanting to IMPROVE my client's situations. Feel free to get in touch with me if you want my services. AI development, artificial intelligence solutions, text to speech technology, app development, AI chatbot services, ChatGPT integration, health AI chatbot, service AI solutions, AI in customer service, AI automation tools, React Native development, cross-platform apps, Flutter mobile development, Android app creation, iOS application development, iPhone app development, Xcode IDE usage, Android Studio use, mobile app design, mobile app development services, mobile technology, app business solutions, Firebase backend services, chat functionality in apps, in-app purchase integration, video call app development, health app development, healthcare mobile apps, entertainment app development, music app development, fitness app technology, booking app development, appointment scheduling app, mobile responsiveness, user interface design, app performance optimization, cloud integration for apps, secure mobile transactions, app monetization strategies, scalable mobile apps, custom app solutions, mobile app testing, user experience enhancement, app deployment, app maintenance services, real-time app features, geo-location services in apps, multimedia app development, social media integration, targeted app marketing Thanks for visiting my profile.!

Ready to launch a million-dollar startup? My AI-Driven Development approach helped 100+ small businesses with 𝐂𝐮𝐭𝐭𝐢𝐧𝐠-𝐞𝐝𝐠𝐞 𝐀𝐈/𝐌𝐋, 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐚𝐧𝐝 𝐀𝐩𝐩𝐬 solutions. Let's turn your online business into a success story. 𝐋𝐞𝐭'𝐬 𝐭𝐚𝐤𝐞 𝐚𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞 𝐨𝐟 𝟑𝟎 𝐦𝐢𝐧𝐮𝐭𝐞𝐬 𝐨𝐟 𝐟𝐫𝐞𝐞 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧. 𝐯𝐚𝐥𝐮𝐞𝐝 𝐚𝐭 $500. ➡️ With a top-rated 100% job score and over 12 years of commercial experience, I deliver ✅ 6000+ Working hours ✅ 100+ Successful projects ✅ 120+ Happy clients worldwide ✅ Proven track record of successful projects ✅ High code quality and an agile approach. My clients have achieved significant funding and a 4X their startup success within a few months, from my Cutting-edge strategies in Artificial Intelligence, Blockchain, and Mobile Apps. I can help you achieve similar results using AI/ML, Blockchain, and Mobile Apps. These cutting-edge technologies like AI/ML, Blockchain, and Mobile Apps are the foundation of your ideas, not just additional features. With over 12 years of extensive experience in cutting-edge AI/Blockchain and Mobile App development, I specialized in creating highly efficient, user-friendly, and visually appealing applications. Use our advanced AI Development Services for business growth with the next enterprise solution. AI Development services i know which change for your business growth with next enterprise solutions  ➡️ 𝐁𝐨𝐨𝐬𝐭 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐠𝐫𝐨𝐰𝐭𝐡 𝐰𝐢𝐭𝐡 𝐨𝐮𝐫 𝐀𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐟𝐨𝐫 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 - 👉 Artificial Intelligence Development  👉 Expert AI / ML Strategy Consulting 👉 Machine Learning Development 👉 Generative AI Development 👉 OpenAI (ChatGPT-3.5 / 4) 👉 Predictive Analytics 👉 Business Intelligence 👉 Natural Language Processing (NLP) 👉AI Automation / Recommendation 👉 Image Recognition and Computer Vision 👉 Chatbots and Virtual Assistants 👉 Recommendation Systems 👉 Speech Recognition and Voice Assistants 👉 Autonomous Vehicles and Robotics 👉 Sentiment Analysis 👉 Fraud Detection 👉 Personalized Healthcare and Medicine ➡️ 𝐇𝐞𝐫𝐞 𝐚𝐫𝐞 𝐭𝐡𝐞 𝐤𝐞𝐲 𝐩𝐫𝐨𝐜𝐞𝐬𝐬𝐞𝐬 𝐭𝐡𝐚𝐭 𝐞𝐧𝐬𝐮𝐫𝐞 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐬𝐮𝐜𝐜𝐞𝐬𝐬  - 1. Data Collecting 2. Data Preparation 3. Model Training 4. Testing and Validating the Model 5. Model Deployment and Integration 6. Model Monitoring and Maintenance ➡️ Technologies that make me the top 1% ✅ 𝐒𝐤𝐢𝐥𝐥𝐬 - Python,R, Java, C++, JavaScript, Julia, Scala, MATLAB, Swift, Go (Golang), Lisp, Prolog, TensorFlow.js, Keras, PyTorch ✅ 𝐃𝐞𝐯𝐎𝐩𝐬 -  AWS, Google Cloud, Azure,Puppet, Docker, Kubernetes, CI/CD, Ansible, Chef etc.  ✅ 𝐓𝐡𝐢𝐫𝐝-𝐩𝐚𝐫𝐭𝐲 𝐀𝐏𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 -  Docker, Trello, Jira, CloudFront, GitHub, Gitlab, Spotify, AWS, Google API, AWS bucket, XMPP, Socket IO, ✅ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 -  MongoDB, MariaDB, PostgreSQL, SQLite, Mysql, Oracle, Firebase, Firestore, Elastic search ✅ 𝐏𝐚𝐲𝐦𝐞𝐧𝐭 𝐀𝐏𝐈 - PayPal, Stripe, Square, Adyen, Worldpay, Authorize.Net, PayU, Braintree, 2Checkout, Razorpay ✅ 𝐒𝐌𝐒/𝐄𝐦𝐚𝐢𝐥 𝐀𝐏𝐈 - Twilio SendGrid, Amazon Simple Email Service (SES), Mailchimp, Sendinblue, Mailgun, SMTP.com, ClickSend, Nexmo, MessageBird, Elastic Email ✅ 𝐍𝐨𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 - Push notification, Firebase, OneSignal, Reteno, Pusher, Airship, PushEngageOmnisend. ✅ 𝐋𝐢𝐯𝐞 𝐯𝐢𝐝𝐞𝐨 𝐜𝐨𝐧𝐟𝐞𝐫𝐞𝐧𝐜𝐢𝐧𝐠 𝐚𝐧𝐝 𝐜𝐡𝐚𝐭 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧- Skype, Zoom, Slake, Gotomeeting, Google Meet, Google Hangout, Cisco WebEx ✅ 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 - Git, Github, Bit bucket, Apache Subversion, GitLab, Assembla, Fossil, BitKeeper. ✅ 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 & 𝐃𝐞𝐛𝐮𝐠𝐠𝐢𝐧𝐠 -  Selenium, Postman, JUnit, TestNG, Apache JMeter ✅ 𝐔𝐈/𝐔𝐗 𝐃𝐞𝐬𝐢𝐠𝐧 -  Figma, Sketch, Adobe XD, InVision, Axure RP, Adobe Illustrator, Adobe Photoshop ✅ 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 - Authentication, Authorization, Encryption, Input Validation, Session Management ,Secure Communication (HTTPS), OWASP Mobile Security ➡️ 𝐔𝐧𝐥𝐨𝐜𝐤 𝐀𝐈'𝐬 𝐩𝐨𝐭𝐞𝐧𝐭𝐢𝐚𝐥 𝐚𝐜𝐫𝐨𝐬𝐬 𝐝𝐢𝐯𝐞𝐫𝐬𝐞 𝐢𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬  -  On Demand │Healthcare │ Finance, Restaurant │eCommerce Logistics │Social Media│Game & Sports│Travel, Real Estate Education│Agriculture│Government│News & Entertainment Events│Wellness ➡️ 𝐖𝐡𝐲 𝐈'𝐦 𝐭𝐡𝐞 𝐏𝐞𝐫𝐟𝐞𝐜𝐭 𝐅𝐢𝐭 𝐟𝐨𝐫 𝐘𝐨𝐮𝐫 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐆𝐫𝐨𝐰𝐭𝐡: -  🔸Top-rated 100% job score with 12+ years of commercial experience. 🔸 Successfully completed over 150 projects with 100 + satisfied clients. 🔸 Accumulated over 5000 hours on Upwork with consistent 5-star ratings. 🔸 Well Commented & Agile Approach into code level. 🔸 Let's take advantages of 30 Min Free Consulting ? 🔸 Demonstrated strong problem-solving abilities. 🔸 Maintain effective communication throughout projects. 𝐋𝐞𝐭'𝐬 𝐭𝐚𝐤𝐞 𝐚𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞 𝐨𝐟 𝐨𝐮𝐫 30-𝐦𝐢𝐧𝐮𝐭𝐞 𝐟𝐫𝐞𝐞 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧, 𝐯𝐚𝐥𝐮𝐞𝐝 𝐚𝐭 $500. 𝐃𝐨𝐧'𝐭 𝐦𝐢𝐬𝐬 𝐨𝐮𝐭—𝐰𝐡𝐚𝐭'𝐬 𝐡𝐨𝐥𝐝𝐢𝐧𝐠 𝐲𝐨𝐮 𝐛𝐚𝐜𝐤?

𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐦𝐨𝐛𝐢𝐥𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝟏𝟕𝐊+ 𝐔𝐩𝐰𝐨𝐫𝐤 𝐡𝐨𝐮𝐫𝐬 | 𝐢𝐎𝐒 & 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 I’m a senior mobile developer from Lviv, focused on building native iOS and Android apps that are stable, fast, and easy to maintain. I’ve worked on everything from small utility apps to complex business and enterprise solutions. 𝐂𝐨𝐫𝐞 𝐬𝐤𝐢𝐥𝐥𝐬 - iOS: Swift, SwiftUI, Objective-C - Android: Kotlin, Java - Backend & services: Firebase (Auth, Firestore/Realtime DB, Storage, Cloud Functions), Google Maps, AWS, REST APIs - Architecture & code quality: MVVM / MVC, clean and reusable code, SOLID principles - Tools & workflows𝐬: Git, SVN, CI/CD, code review, crash/error monitoring - Strong debugging, troubleshooting, and performance optimization skills 𝐖𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡 - Building a new iOS/Android app from scratch - Continuing or refactoring an existing app - Implementing new features and fixing bugs - Improving performance and responsiveness - Integrating 3rd-party SDKs, in-app purchases, subscriptions, push notifications - Preparing builds and submitting to the App Store and Google Play I’ve successfully worked with clients from different countries and industries, and I understand the importance of: - clear, regular communication - realistic estimates and timelines - reliable maintenance and long-term support If you’re looking for a dependable native mobile developer for your iOS or Android app, feel free to contact me and we can discuss your project in detail.

I am specialized in crafting high-quality applications for both iOS and Android platforms, with a proven track record of successful projects available on the Apple App Store and Google Play Store. Since embarking on my journey in mobile app development, I have dedicated myself to writing clean, efficient code and creating elegant front-end designs. Passionate and diligent, I’m committed to delivering simple yet beautifully functional products. 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬: iOS & Android App Development React Native App Development Web Services: XML/JSON, REST/SOAP Cloud Backends: Parse, AWS, Firebase, Foodie, RemoteStorage, Twilio, Plivo Chat & Messaging Engines: XMPP, Jabber, OpenFire, OpenTok WebRTC Video/Audio/Image Processing: OpenCV, GPU Image, CoreAudio, AVFoundation Databases: SQLite, Oracle, SQL Server, ODBC Social Media Integrations: Facebook, Twitter, LinkedIn, Instagram, YouTube, Pinterest, Vimeo Location Services: Google Maps, Foursquare, GPS, OpenStreetMap Online Payment Gateway Integrations 𝐏𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐢𝐧 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐫𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐮𝐬𝐢𝐧𝐠 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞 𝐟𝐨𝐫 𝐛𝐚𝐜𝐤𝐞𝐧𝐝, 𝐚𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐝𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐦𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭. 𝐊𝐞𝐲 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐈𝐧𝐜𝐥𝐮𝐝𝐞𝐬: Social Networking Apps Dating Apps Messaging Apps Shopping Apps Video & Voice Calling Apps Facebook Integration, Barcode & QR Code Scanning UI/UX Design, GPS-based Features Tinder-style, Snapchat-style App Development 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬: Translate designs and wireframes into high-quality, AI-enhanced code Build and maintain high-performance, reusable Java code Ensure the best performance, quality, and responsiveness for AI-driven features Identify and fix bottlenecks, bugs, and issues Maintain clean, organized, and efficient code while incorporating AI features Since the beginning of my development career, I’ve dedicated myself to writing clean, effective code with a focus on high-quality design and seamless AI integrations. I am passionate and committed to creating simple, beautiful products that stand out with their intelligent features and high performance. I’m a result-driven professional who is fully committed to my work. I pride myself on being trustworthy, honest, and reliable, and I thrive in delivering great results without requiring extensive training. You can count on me to act as an in-house developer who will execute your projects in a timely and efficient manner. 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 & 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧: Clear and efficient communication is key to any successful project. With a strong command of English and excellent communication skills, we’ll be able to collaborate seamlessly, ensuring your vision is brought to life. 𝐏𝐨𝐬𝐭-𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐒𝐮𝐩𝐩𝐨𝐫𝐭: I offer one year of free support after the project is completed, ensuring your application runs smoothly. For ongoing support, I offer affordable maintenance packages, providing peace of mind well beyond the first year. My goal is 100% customer satisfaction, and I take full responsibility for ensuring the successful completion of every project I undertake.

I've been working as a mobile app and video game developer since September 2013 to date. In this very time period I have come across to some very challenging apps and games and was able to complete all of them successfully and manage to satisfy the clients in every business aspects.

Yes I have big interest in develop new projects with Android Studio and Visual Studio iOS C## application .Using any TestFlight iOS App .Also possess skills on Flutter, Metatrader 5 , and TRADINGVIEW PINESCRIPT VIDEO .Please check on my portfolio here at upwork dot com / freelancers /alfonsof4 I would like have also interest in Visual C++ . I have known for JavaScript HTML , python and React Node.js , will show my skills with some previous work show sample on discuss chat . React projects . MY PORTFOLIO HAS SHOWS ARDUINO BUTTONS BARCODE SCANNER IDEAS PROJECT SKILL GENERATED FROM CLAUDE.AI VIDEO WITH CODES . I HAVE READ ABOUT ARDUINO ESP32 WiFi connection with BlueTooth card from github to share ideas with new arduino Upwork clients

Easy communication, Fast speed, High quality, High credit, High delivery! This is my important target. If you select me as a contractor, I will reply with good quality and rapid turnaround. I will provide service to your satisfaction. You won't be disappointed. I am sure. I am a mobile developer for 7+ years. I love to do mobile apps. A wide range of iOS Apps developed for different verticals like Food Ordering, Fitness, Legal, Business Automation, Social, Transportation etc. Technology experience includes - iOS/Cocoa/iPad/iPhone/Apple Watch/Fitness Bands. Have deep knowledge and experience in the following areas: - Restful JSON-based Web Service - In-App Purchases - Social Network - Facebook, Twitter - Google API - Facebook API - Parse API - Audio Streaming, Video Streaming - Creating and developing modules as GPS - Push Notification - Multi-Language support, - Automatic Database Sync. - Google Map Service, - Apple Map Service, - Geo Location - - CoreData, CoreGraphics, Animation,SQLite. - XMPP and Web socket

🏆 Top 1% Upwork Certified Mobile Developer ⭐ 100% Job Success Score 📱 10+ Years of Professional Mobile Development Experience I am a senior mobile app developer with over a decade of experience delivering scalable, high-performance iOS and Android applications. I specialize in Flutter and React Native, helping startups and enterprises turn ideas into reliable, production-ready mobile products. I combine strong technical expertise with a business-focused mindset, ensuring the applications I build are not only well-engineered but also aligned with your goals, timelines, and budget. Core Expertise Cross-Platform Mobile Development • 6+ years of hands-on experience with Flutter and React Native • Single codebase solutions with native-like performance and UI • Faster development cycles without compromising quality Native Mobile Development • 10+ years of experience in iOS (Swift, Objective-C) and Android (Java, Kotlin) • Strong capability to handle complex platform-specific features and integrations End-to-End Product Delivery • Architecture planning and technical consulting • Development, testing, App Store / Play Store deployment • Ongoing maintenance and post-launch support • Delivered 100+ mobile applications, including enterprise and high-traffic apps Clients Can Expect ✔ Clean, maintainable, and scalable code following industry best practices ✔ Clear communication and regular progress updates ✔ A solution-oriented approach focused on real business outcomes ✔ Flexibility to work with startups, agencies, and enterprise teams ✔ Reliable delivery with long-term support when needed Industries & Feature Experience Industries: Healthcare, Finance, E-commerce, Education, Social Media, Real Estate, Retail Key Features: • Video & audio streaming • Real-time chat and messaging (XMPP, WebRTC) • E-commerce & payment integrations (Stripe, Braintree) • GPS, maps, and location-based services • IoT & Bluetooth (BLE) integrations • Photo editing and media processing Technologies Mobile: Flutter, React Native, Swift, Objective-C, Java, Kotlin, SwiftUI Backend & Cloud: Firebase, AWS, Azure, REST/SOAP APIs Databases: PostgreSQL, MySQL Tools: GitHub, Bitbucket, JIRA Integrations: Payments, Maps, Social Media SDKs, third-party APIs Client Feedback “Jija John did an outstanding job developing my eLearning platform’s mobile app for both iOS and Android. His expertise and dedication were evident throughout the project. I’m thrilled with the results and look forward to future collaborations.” — Scott Sabet If you’re looking for a reliable, senior-level mobile developer who can take ownership of your project and deliver a polished mobile application, I’d be happy to discuss your requirements. 📩 Let’s connect and build something impactful together.

I'm Embedded Software engineer Experience and skills: - 11 years experience in software development including 8 years in Embedded Linux and Gateway - Solid Experience with Provisionning Standards: TR-069, TR-369, TR-181, TR-104, TR-098, TR-143, TR-157, TR-111(Stun), XMPP - Embedded Linux development with C, Script shell, Python - OpenWRT, OpenMPTCPRouter, UcLinux, ESP-IDF - Solid Experience with OpenWRT - ACS customization: GenieACS - Networking technologies expertise: TCP/IP, MPTCP, NAT, DNS, WiFi, Ethernet, TR-348 - ping, traceroute, iptables, iperf, tcpdump - Git, Gitlab, CD/CI - Working on multiple devices and routers such as ESP32, Raspberry Pi, Glinet, Inteno, Genexis. - Have several projects and contributions on Web development: Angular, Dango, Dango Rest API, Nodejs, HTML, JS, JQuery, VueJS

✅ $90K+ earned | ✅ 76+ Completed Jobs on Upwork ✅ 3,614+ Upwork hours | ✅ 100% Job Success ✅ 10+ Years of proven experience. ✅ Available to work in the client's time zone. ✅ Cross-platform expert: iOS, Android, Flutter, React Native ✅ Known for End-to-End Solution With over 9 years of experience as a Senior Developer at IPHS Technologies LLP, I specialize in crafting high-performance mobile and web applications using ReactJS and React Native. My expertise extends to building scalable, user-centric solutions with seamless API integrations, Firebase, and advanced features like push notifications and in-app purchases. Key Achievements 1. Developed a React Native & Firebase-based mobile app for Immersion360, delivering a robust social app with cloud-based user databases and push notifications, logging 827 hours (2021–2024). 2. Built a ReactJS web application for Gloocle.com, enhancing user experience with optimized frontend performance (2021). 3. Optimized Next.js site performance for Metrics Business Systems, leveraging ReactJS for faster load times and improved SEO (2022). 4. Delivered React Native solutions integrating social media APIs (Facebook, Instagram) for a feature-rich social app (2021–2022). 5. Implemented SwiftUI and React Native hybrid solutions for mobile apps, ensuring cross-platform compatibility and modern UI/UX (2020–2022). Core Competencies 1. React-Based Development: ReactJS, React Native, Next.js, Redux, TypeScript. 2. Mobile Development: Cross-platform apps with React Native, Firebase, SwiftUI, and Native iOS/Android SDKs. 3. Web Development: ReactJS-powered websites, WordPress, Laravel for backend integration. 4. APIs & Integrations: REST, SOAP, JSON, Firebase, AWS, XMPP, SendBird for chat solutions. 5. Advanced Features: Push notifications, in-app purchases, geo-fencing, social media integrations (Facebook, Twitter, Instagram), analytics (Google, Flurry). 6. Tools & Practices: Agile, Scrum, Jira, GitHub, Bitbucket for clean, optimized code. Why Work With Me? I deliver pixel-perfect, high-quality ReactJS and React Native applications, following Agile methodologies and Git Flow for robust, maintainable code. With 30+ successful Upwork contracts for clients like Photo Finale, Crowdbotics, and Blue Byte Design, I ensure timely delivery and client satisfaction. My experience includes social apps, fitness apps, and e-commerce platforms with localisation and internationalisation support. I kindly request you to invite me for the interview and experience the best professional services. Warm Regards, Shashi