I am an expert Mobile App Developer with 11 Years of experience in developing Mobile Applications for various industries and verticals. I have a strong knowledge of basics, such as common design patterns (MVC, Clean Swift, VIPER, MVVM/RxSwift), programming languages (Swift, Kotlin, Dart, React Native) and standard iOS & Android frameworks (UIKit, MapKit, SpriteKit, Apple Pay etc.), I also have a great experience in wide number of third-party SDKs: Google Firebase, Facebook, PayPal, Stripe, Google Maps, ad networks, Parse Server etc. 💡 How I can help you: Proficiency in mobile app development: - MVC/MVP/CLEAN CODE Architecture practices. - Proficient with Object-Oriented Programming concepts. - Strictly adhering to the naming conventions and code re-usability - Category, Protocol and Class-based Coding Standards - Storyboards - Strong optimization and debugging skills. - Create Custom Event Handling Using Listeners. - Proper Code commenting and documentation. - Strong optimization and debugging skills. Solutions delivered: ✅ Taxi, Ride Sharing and Cab Booking ✅ GYM, Health and Fitness ✅ On Demand Services ✅ Restaurants and Food Delivery ✅ E-Commerce and Grocery ✅ Real Estate and Property Listing ✅ eLearning, University, School, Coaching ✅ Social Networking, Dating ✅ 2d/3d Mobile Games ✅ IoT (Internet Of Things) ✅ Travels, Flight and Hotel Booking Development Languages: - iOS - Objective C, Swift - Android - Java - Flutter Development Tools: - Android Studio/XcodeEclipse - Xcode Database: - MySQL [Backend] - MongoDB [Backend] Backend: - JSON REST Services - Node.js Services - PHP (Laravel,CI) Third-Party SDKs : - Google Analytics and Flurry Analytics - XMPP Chat SDK + Quickblox SDK - ObjectMapper - Firebase SDK [Chatting, Push Notification, Analytics, Ad Mob] - Socket.IO [Events and Chatting App] - Barcode, ZXing, Zbar Libraries/Modules: - GSON - Apache Common libs(lang,IO,collection) - Zxing QR code library - Using Dagger-2 Manage Dependency Injection - Event Bus - InApp Purchase and Subscription - RetroFit - Google Map - JSON/XML Parsing Devices and OS Support: - Supported OS: 4.4 and Above [till latest version of Android]/Supported OS: 11.0 and Above [till latest version of iOS] - All resolution devices Android/iPad and iPhone with landscape and portrait mode. - Multi-language Support - Left to Right and Right to left like Arabic etc. Social Media Integration: - Facebook, Twitter, Instagram, Linkedin, Foursquare, Google+, YouTube, Gowalla Payment Gateways Integration: - Android Pay/Apple Pay

🏆 Top-Rated Full Stack Developer | 7+ Years Experience 📱 50+ Mobile Apps | 🌐 20+ Web Projects | 💡 AI-Driven Experiences 💯 5-Star Client Feedback | 30+ Apps Live on Play Store & App Store 🧠 AI & ML Expert | Fast Delivery | Clean Architecture | Pixel-Perfect UI 👨‍💻 Who Am I? I’m a full-stack Mobile & Web Application Developer with over 7 years of experience building high-quality digital products. I specialize in cross-platform development using Flutter, native Android apps in Kotlin, and robust backend systems using Node.js, Firebase, and PHP. I’ve recently expanded my expertise into AI-powered mobile apps, integrating intelligent features like OCR, object detection, recommendation systems, and GPT-powered chat to elevate app experiences for clients across logistics, healthcare, finance, and education. 🛠️ Core Tech Stack: 📱 Mobile Development: Flutter (Bloc, Riverpod, GetX, Provider) Android (Kotlin, Java, Jetpack Compose, Hilt, Room, WorkManager) React Native (on-demand) iOS (Swift, SwiftUI - as part of Flutter or hybrid projects) 🌐 Web Development: Front-End: React.js, HTML5, Tailwind, Bootstrap, JavaScript/TypeScript Back-End: Node.js, Express, PHP, Firebase Functions, Socket.IO CMS & Tools: WordPress, Shopify, Admin dashboards (custom or template-based) 🤖 AI/ML Expertise: TensorFlow Lite, ONNX Runtime, Core ML, OpenCV ChatGPT / OpenAI / LangChain API integration for smart conversations OCR & Object Detection (YOLO, CRNN) Recommendation Engines, Image Classification, Auto-labeling tools Voice Command Integration, Speech-to-Text, Text Summarization ⚙️ Additional Integrations: Google Maps SDK, Location Tracking, Geofencing Firebase (Auth, Firestore, Analytics, Crashlytics, Push Notifications) RESTful & GraphQL APIs, Real-time Chat (XMPP, QuickBlox, Agora) Payment Gateways: Razorpay, Stripe, PayPal, Google Billing, Apple Pay In-App Purchases & Subscriptions BLE, NFC, USB integration, IoT support 📦 Domains I Work With: 📦 Logistics & Inventory Systems (Barcode, OCR, Object Detection) 🛒 eCommerce & Marketplaces 📲 Real-Time Chat & Video Apps (WebRTC, Agora, Twilio) 🏥 Healthcare & Fitness Apps 🎓 Education & eLearning Platforms 🧹 Home Services / Booking Systems 🛠 Custom CRM/Admin Panels for Businesses 💼 Why Clients Love Working with Me: ✅ Deep domain knowledge & fast execution ✅ AI-enhanced, future-ready apps ✅ Transparent communication & clear timelines ✅ Scalable and clean architecture ✅ Long-term support & post-deployment care

💪 12+ years in DevOps, cloud (AWS, GCP, Azure), CI/CD, Kubernetes, and infrastructure automation. 💪 Proven success in cost optimization, system reliability, and monitoring (Prometheus, Grafana). 💪 Expert in Terraform, Docker, Jenkins, and GitLab CI. 💪 Focused on delivering results, not screen-sharing. **Note:** ------- - No screen-sharing. - Must provide environment access.

Senior mobile application developer (Android, iOS, Flutter) with 8+ years of experience in different types of organization. I have developed a number of mobile applications for Android (Java, Kotlin), iOS (Objective C, Swift) and Flutter. I also have experience working with Firebase, backend developers for API, AWS amplify, audio/video frameworks, barcode scanner, data security, payment gateways, push notifications, google maps, social media sdk, publish mobile app in apple and google play store. I have delivered 30+ bug-free apps with clean, well-documented source code for different clients. Having a solid background in creating complex native and cross mobile applications I can work independently and respect a deadline. iOS: • Objective-C • Swift • SwiftUI • Sotryboard Design • Autolayout design • Payment method • Sqlite 3 • AFNetworking • Pod • APNS • Bar code scan • Push Notification • Testflight • Google Map, GPS, Ads • JSON, XMLRpc • CallKit, MapKit Flutter: • Flutter Android, iOS and Web • Platform Independent • Firebase with Flutter • UI design • Flutter Http connection • Cupertino (iOS-style widgets) • Flutter Material Components • Assets, Images, and Icons • Interaction model widgets • deep linking • Multiple language support • PDF library • Animations Android: • Android Architecture component • MVVM, MVP, Livedata, • Facebook SDK, Accountkit • Smack Chat library • Bar code scan • Google Map, GPS, Ads • Material Design • Video and audio call • Firebase phone Auth, Email auth, push notification, analytics. • PJSIP Library build • Kotlin • Barcode scan • OCR (Optical character recognition) • Google translation

𝗘𝘃𝗲𝗿𝘆𝗼𝗻𝗲 𝗰𝗮𝗻 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗥𝗘𝗦𝗨𝗟𝗧𝗦 𝗯𝘂𝘁 𝗼𝗻𝗹𝘆 𝗮 𝗳𝗲𝘄 𝗰𝗮𝗻 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗦𝗔𝗧𝗜𝗦𝗙𝗔𝗖𝗧𝗜𝗢𝗡. ✅ Rewarded as 🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 🏆 by Upwork ✅ 116+ hours and still counting ✅ 20+ jobs completed successfully ✅ 100% Job Success (Client Satisfaction Ratio) ✅ 82% Clients Recommended to work with me ✅ 75% Long-term Repeat Clients ✅ 10+ Years Of Experience I am delivering Satisfaction for the last 10+ years having completed 20+ jobs and 116+ hours over the Upwork with 𝟭𝟬𝟬% 𝗷𝗼𝗯 𝘀𝘂𝗰𝗰𝗲𝘀𝘀 𝘀𝗰𝗼𝗿𝗲. That's the reason, I have been continuously rewarded with 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 Badge by Upwork since the beginning. 🔹 My core skills and experiences: ◉ Interaction with backend - Rest API, JSON, XML, PHP ◉ Databases / Data Management - SQLite, MySQL, Parse ◉ Social Integration - Facebook, Twitter, Youtube, Instagram, Snapchat, Tinder ◉ Chat - XMPP, Socket, Firebase, Sendbird, Twilio ◉ Version Control Tools - Github, Bitbucket, Gitlab ◉ Google Map, Apple Map kit, Geolocation, GPS, Location Tracking ◉ Audio / Video Live Streaming ◉ Firebase APIs ◉ Paypal, Braintree, Stripe Payment Gateway ◉ QR Codes, Bar Codes, VIN Scanner, NFC Tags Reading ◉ In-App Purchase, Advertisement, Push Notifications, GCM, Google Analytics ◉ Photo & Video Sharing, Editor, Filter Keyword: iOS app development, Android app development, Flutter developer, Swift developer, Kotlin developer, SwiftUI, Objective-C, mobile UI/UX designer, mobile app design, app store optimization, ASO expert, resume builder app, PDF generator app, invoice app, ChatGPT app, OpenAI integration, mobile app developer, React Native developer, iPhone app developer, iPad app development, Firebase integration, Stripe payment app, PayPal integration, push notifications, Flutter UI design, SwiftUI expert, app performance optimization, bug fixing app, app maintenance, AI app development, OCR mobile app, barcode scanner app, QR code app, live streaming app, video editing app, camera app development, photo filter app, audio recorder app, image processing app, Google Maps app, location-based app, GPS tracking app, social media integration, Facebook login, Google sign-in, Apple sign-in, Firebase auth, mobile backend developer, Node.js mobile backend, Django app backend, mobile API integration, in-app purchases, AdMob integration, RevenueCat, app analytics, Mixpanel, Firebase Analytics, mobile game developer, AR app developer, ML Kit, machine learning app, AI chatbot app, ecommerce mobile app, food delivery app, taxi booking app, fitness tracker app, health app development, meditation app, productivity app, time tracking app, event planner app, alarm app, to-do list app, calendar app, mobile CRM app, SaaS mobile app, UI/UX in Figma, Adobe XD mobile UI, responsive app design, dark mode app, Swift developer India, Flutter developer India, Upwork app developer, iOS freelancer, Android freelancer, hybrid app developer, cross-platform mobile app, mobile MVP development, scalable mobile app, Firebase Firestore, CoreData expert, SQLite integration, Realm database, REST API, GraphQL API, backend with Firebase, dynamic wallpaper app, iOS widgets, lock screen widget, iOS 16 dynamic island, iOS 17 app developer, app optimization, low-code mobile app, no-code app developer, custom app development, mobile dashboard app, mobile admin panel, app cloning, app rebranding, white-label mobile app, chat app with ChatGPT, AI content generator app, ChatGPT mobile UI, CV builder app, resume PDF export, job finder app, mobile portfolio app, signature capture app, feedback form app, survey app, lead collection app, client onboarding app, business card scanner app, document scanner app, LMS mobile app, mobile learning app, education app development, student attendance app, school communication app, university app, mobile HR app, employee attendance app, payroll app, invoice PDF app, invoice tracker app, expense tracker app, budget planner app, personal finance app, EMI calculator app, tip calculator app, unit converter app, currency converter app, stock market tracker app, crypto tracker app, app download boost, app install campaign, ASO keywords, app store keywords, iOS ranking strategy, Google Play ranking, app icon design, app splash screen, onboarding UI, animated app UI, Framer Motion Flutter, gesture-based app, app with Lottie animations, background task app, notification scheduling, background location tracking, Bluetooth app, NFC app, camera-based AI app, live object detection, translation app, dictionary app, text-to-speech app, speech-to-text app, voice recorder app, transcription app, language learning app, news aggregator app, podcast app, music streaming app, file manager app, document viewer app, notes app, reminder app, app security, secure login app, app with encryption, GDPR-compliant app, HIPAA-compliant

I am a Full-stack Android and iOS developer with 5+ years of experience. I have maintained, developed and launched multiple projects from scratch. Worked on the following areas of Android, iOS, and VoIP app development: • Audio Call/Dialler/PTT(PJSIP/FreeSwtich/Asterisk) • Video Call using Kurento(OpenVidu)/WebRTC • VoIP - Asterisk/FreeSwitch installation and configuration • AI application using Dialogflow, Snips • Chatbot development using Dialogflow, Manychat • Instant Messaging(XMPP/Jabber) • Live Video Streaming using Live555/VLC • Live Audio Streaming/Online Radio using Icecast/Ices/EZStream • Map Integration(Google Map/Apple Map/OpenLayers Map/Leaflet) • Facebook/Twitter Integration • Web service integration(SOAP/RESTful) • Ad Implementation(iAd/Admob) • Local DB(SQLite, CoreData)   • Flurry (App Analytics) • Web service development in PHP

AI integration is a focus! "AI agents will replace most SaaS/mobile apps in the near future, no more boring forms, no app stores, no strict data structures," said Microsoft CEO Satya Nadella. To build something bigger than no-code AI agents, you would need a contractor with a wide skill set in Python, prompting, data, as well as DevOps, CloudOps, MLOps. DevOps is automation, cost reduction, competitive edge, ... it's a mindset for the entire team! I'm proud of hundreds of successfully delivered projects for SMB and Enterprise. I'm a full-stack technical lead with broad expertise. I can work alone, but often involve offshore teammates for higher efficiency and optimal cost. I mentor, contribute to open source, build AI products, support the local community, and I donate a % of my profits to humanitarian needs due to the situation in my home country. Stand with Ukraine!

I’m a Senior Mobile & Backend Engineer with extensive experience building high-performance, scalable applications end-to-end — from mobile UI to backend architecture and production deployment. I specialize in delivering robust, production-ready solutions across iOS, Android, and cross-platform environments, backed by reliable and scalable server-side systems. Mobile Development: Native iOS: Objective-C, Swift, SwiftUI Android: Kotlin Cross-platform: Flutter, React Native Backend & Infrastructure: Backend: Node.js, Express.js, Python Databases: MongoDB, PostgreSQL API design: RESTful services, scalable architectures DevOps: Docker, containerized environments, deployment pipelines AI Integration: OpenAI API, LLM-powered features (content generation, automation, smart workflows) End-to-end ownership: from idea → architecture → implementation → production Strong problem-solving mindset and attention to edge cases Production experience with monitoring, debugging, and performance optimization Ability to quickly understand business needs and translate them into reliable technical solutions Typical Projects I Deliver: Full-stack mobile applications (iOS/Android + backend) Scalable APIs and backend systems for mobile apps AI-powered features (smart content generation, automation, intelligent UX flows) App performance optimization and refactoring legacy codebases Feature development with clean, testable architecture MVP development with a strong foundation for scaling

Expert Mobile app Developer- Objective-C, Swift, Java, Kotlin, React Native, Flutter. I am a professional App Developer having 13+ years of experience in making native applications and hybrid applications. Proficiencies In: I offer a diverse array of skills tailored to mobile app development, encompassing: SDK creation, seamless integration with Firebase, specialised KIOSK app design, proficiency in BLE and NFC technologies, GPS and navigation system implementation, adept handling of SQLite databases, mastery in C/C++ and RUST binary interfaces, seamless integration with SO, smooth Kafka integration, expertise in SocketIO and WebRTC, proficiency in WOWZA, adeptness in multithreading techniques, seamless printer integration, and proficiency in managing in-app purchases (IAP). I have extensive experience integrating third-party APIs like Facebook, Google, Twitter, Dropbox, Instagram, Amazon, Amazon Seller. I also have sound knowledge in developing custom backend solutions for interaction with mobile apps. ✅ 900 + hours on Upwork ✅ Web + Mobile development ✅ 5+ Long-Term Relationship Projects on Upwork ✅ 5.0-star ratings certified by Upwork ✅ Native Android App Development - JAVA, Kotlin ✅ Native IOS App Development - Objective-C, Swift ✅ Cross platform, Flutter , React Native Map (GPS): Google Map, Geolocation, Geo-Fence, GPS, Open Street Maps, Distance mapping, Direction Guiding Native Platform: iOS, Android, Objective-C, Swift, Java, C#, C/C++ Web service: JSON, RESTful, SOAP, Parse, AWS Chat & Messaging : XMPP, Quick-box, WebRTC Media processing : OpenCV, FFMpag, CoreAudio, AVFoundation Database: MySQL, SQ Lite, MongoDB, PostageSQL Server Social Site Authentication : Facebook, Twitter, Google, Apple, Youtube Source control: Github, bitbucket, SVN. : Best Regards Hitesh.Gs

I have been building iOS apps for more than 8 years. I have very good experience of prototyping, designing, and development of mobile applications. Over the past years, I have helped many companies build mobile solutions and I have been using a lot of good programming practices and patterns, that help me write better code. Most of the applications I have worked on I have developed from scratch, so I know how to design application architecture and write clean and well-maintained code. Your satisfaction and delivering quality product are my top priorities. Programming Experience: • Swift • Objective-C • PHP • Strong object-oriented design skills • Deep understanding of OOP • Knowledge of multi-threaded, asynchronous code • Proven debugging and performance testing skills • Ability to write clean, well-factored UI code Technology Experience: • Strong knowledge of iOS SDKs • UI development through Interface Builder, Storyboards and programmatically. (I like using native layout) • Experience with offline storage, threading and performance tuning • Familiar with Analytics, Push Notifications, In-app Purchase, Location and Map APIs • Experience with Bluetooth LE (Low Energy) development • Experience with XMPP and Twillio Chat • Experience in creating REST / JSON / XML Web Services • PHP frameworks: CakePHP and Laravel • Very good understanding of code versioning tools: Git • Well versed in build systems & dependency managers: Cocoa Pods and Carthage. Personal Qualities: • Ability to understand business requirements and translate them into technical requirements • Passion for quality and attention to detail • Focus on moving the business forward, always keeping the customer at the centre of everything I do • Cooperative and helpful with a team, but also capable of working completely autonomously