I am a physicist and a software developer in the C family of programming languages. I mostly do native iOS (Swift/Objective-C) and cross-platform C++ programming and can handle some JavaScript. I am also interested in anything physics-related: would be glad to put my degree to work. See below for more details. I started working in professional software development in 2007. In the same year I received a master's degree in nuclear and elementary particles physics from Taras Shevchenko Kyiv University, so I have a strong mathematical background. You can find a link to my arXiv page in the 'Other experiences' section of my profile. I programmed iOS and Mac applications most of the time but had a chance to familiarize myself with front- and back-end web development as well. I am also proficient in modern C++. Here are some rare skills of mine that may interest you: - hybrid (native + JS) iOS applications; - XMPP (Jabber) protocol; - back-end web development in C++; - physical processes modelling, discrete element method modeling pf many-particle dynamics in particular.

My name is Mohamed Farghal, I am an Mobile developer with 8 years of experience, during this period I was involved in development of such products as geolocation, delivery services, VoIP, CRM, messengers, and social media apps. Expertise: • Objective-C, Swift • Java, Kotlin • Back-end development: RESTful web services, Firebase, Parse • Creating UI with Storyboards, XIB or code-made UI • Database: MySQL, SQLite, MongoDB ,RealM,GRDB • Social network integration: Facebook, Twitter, Instagram, LinkedIn, Google+, etc • Chatting protocol: XMPP • Geolocation services: GPS, Google Maps • Version control: Git • Distributing and crash reporting services: TestFlight, HockeyApp, Crashlytics

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

Hello I'm a software developer,. I code in Python, PHP,Golang, C, and Javascript. I have over 10 years experience in overal in those languages. I mainly work in backend but i'm also open to work with frontend with javascript. I also familiar some core network features such as Iptables, nmap and many others. I have work with many network protocols such as HTTP/S, WebSocket, Short Mesaage Peer to Peer (SMPP), XMPP. But also open for another protocol if needed. I also familiar in cryptographyc protocol such as key exchange, digital signature and many others. I use Linux as my main operating system to work with, but also open to another operating systems. And most important i'm willing to learn new things if your project needs it.

I'm a professional front-end engineer with 10+ years of experience. I'm experienced in designing system architectures and solutions for rapid scaling. I have significant experience working in startups and fast-moving teams with fixed deadlines. I am very flexible with different technologies and methodologies, and so can learn and adapt to new environments quickly.

As a technical consultant, I prioritize the architecture of the app, clean code practices, and product design to ensure the highest quality of the final product. My ultimate goal is to make my clients happy and help them create successful mobile applications. Here's what I bring to the table: Excellent software architecture skills, ensuring well-structured code. Extensive experience integrating with third-party libraries and APIs. Strong comprehension of UI/UX, adhering to Android Material and iOS Design guidelines. Solid understanding of the mobile development life cycle. Proven track record of publishing apps to App Stores. My core strength areas include: Native iOS app development using Swift 5 and Objective-C. Android app development using Core Java and Kotlin. Cross-platform app development using Flutter, React Native (Redux, EcmaScript), Cordova, and Relay. Progressive web application development. Expertise in ChatGPT and OpenAI technologies. Custom product creation using ChatGPT. Chatbot development using AI components like IBM Watson, NLP, and Amazon Rex. Wireframing using tools like Invision, Balsamiq, Marvel, and Mockingbot. Database management using RealM, PostgreSQL, MySQL, SQLite. Proficiency in Amazon Web Services (AWS), Firebase/Firestore, and Google Cloud Platform (GCP). In addition, I have specific expertise in SwiftUI, enabling me to create complex UI, implement 3D assets and animations for smooth app performance, leverage the new Canvas API for lower-level drawing primitives, and utilize the Rotor API for improved accessibility and faster interactions. I am also experienced in KML integrations, utilizing Maps JavaScript API to display geographic information from KML and GeoRSS data formats, as well as caching KML files to optimize server load. Furthermore, I have expertise in face mapping technology, including face recognition, biometrics, and face detection processes for verification and identification purposes. When it comes to IoT integration, I have successfully integrated Bluetooth Low Energy (BLE) and Wi-Fi enabled devices, following high-level ACE 128-bit encryption and OAuth2 protocols. I have experience with devices such as iWatch for session tracking and notification purposes, BLE and Wi-Fi printers via SDKs and APIs, and IoT devices with BLE support. Additionally, I am familiar with encryption and decryption using PKI Key and have worked with Arduino UNO, NodeMCU ESP8266, and ESP32 boards. Messaging and chat platforms are another area of expertise for me. I have developed chat/messaging-based platforms using various technologies such as XMPP, Rocket chat, Socket.io, Jitsi, Signal R, and integrated third-party services like Firebase, Twilio, and Quickblox. I am well-versed in encryption and decryption techniques for secure messaging and have experience handling large user databases with offline features and online syncing behavior. Some of my recent projects include developing applications using ChatGPT, ChatGPT 3, ChatGPT 4, Open AI, Artificial Intelligence, and Machine Learning. I have also worked on COVID-related projects, including vaccination booking and certificate tracking, COVID-19 tracking apps using BLE and real-time tracking of quarantine patients, COVID-19 prescreening/s

I help banks, fintechs, and startups design and deliver AI-powered solutions that are secure, scalable, and future-ready. Whether you need a chatbot powered by LLMs, a digital wallet, or a microservices-based enterprise system, I bring the right mix of technical depth and business understanding to turn ideas into real products. Core Expertise Artificial Intelligence & LLMs: Integration of GPT/LLM APIs, custom AI agents, NLP chatbots, model training, embeddings, vector databases. FinTech Solutions: Digital banking, wallets, core banking integrations, payment gateways (Stripe, PayPal, Mastercard, Visa), fraud detection, KYC/AML compliance. Mobile & Web Development: Kotlin, Flutter, Java Spring Boot, REST APIs, secure mobile banking apps. Enterprise Architecture: Microservices, event-driven systems, cloud (AWS), UML & ArchiMate diagrams, API documentation, TOGAF-aligned frameworks. Proof of Impact Built AI chatbot that reduced call center load by 40%. Designed digital wallet architecture for a bank serving 20M+ active customers. Delivered enterprise solutions that processed $100B+ annual payment volume. Developed mobile apps with 2M+ downloads and 4.7★ ratings. Why Work With Me 10+ years in enterprise-grade systems across fintech, e-commerce, and telecom. Hands-on solution delivery from requirements → architecture → development → go-live. ⭐⭐⭐⭐⭐ Upwork client ratings for on-time delivery and high technical quality. Strong focus on business alignment: I don’t just build software, I build revenue-driving products. Let’s Build Together If you’re looking for someone who can combine AI innovation, fintech expertise, and enterprise-class delivery, let’s talk. I can help you turn complex ideas into scalable digital products — faster, smarter, and aligned to your goals.

 Welcome 😁 💪 Expertise in: - Swift | SwiftUI | Storyboard | AutoLayout - CocoaPods | CocaTouch | Cocoa Framework - Push Notifications[ APNs, Firebase, Onesignal ] - In-App Purchase | Stripe | Apple pay - Core Data | Core Location | - APIs integration | Codable - Apple TestFlight, App Store submission 💪Additional Expertise: - AWS SDK Amplify Storage, - Real-time Communication using Firebase Observer and Socket.io - webRTC/Twilio/Agora.io, - Audio and Video Streaming, Image Processing - Github, Bitbucket, Trello, Jira ✍I always aim to maintain a long-term relationship with my clients. Whether you've lost your original developer, need additional resources, or want a brand new app, I can step in and take over wherever you need. I have 5+ years of hands-on App development experienced in Obj-C, Swift, SwiftUI, Xcode, Cocoa, iPhone SDK, Android SDK. I have 3 years of experience in Flutter, Dart, Firebase, and state management like BloC, Provider, GetX. I have developed many different types of iPhone, iPad, Android applications. E.g. social networking app, dating app, chat app, car rental app, food delivery app, shopping app, e-commerce app, fitness app, video/photo app, business apps and enterprise apps. Why you should hire me? ✔ Strong Android/iPhone architecture and database knowledge ✔ Develop applications that support all devices ✔ I am as passionate about your project as you are ✔ Delivering the products on/before time ✔ High Quality of work ✔ Always up-to-date with the latest technologies ✔ Less hourly rate than others My core skills and experiences in Android and iPhone applications development are: ✔ Interaction with backend - Restful, JSON, XML, PHP, Node.js ✔ Databases / Data Management - SQLite, MySQL, Parse, MongoDB ✔ Social Integration - Facebook, Twitter, Youtube, Instagram, Snapchat, Tinder ✔ Chat - XMPP, Socket, Firebase ✔ Version Control Tools - Github, Bitbucket, Gitlab ✔ Google Maps, Apple Map kit, Geolocation, GPS, Location Tracking ✔ Audio / Video Live Streaming ✔ Firebase APIs ✔ Augmented Reality ✔ P-a-y-p-a-l, 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 💬 𝗙𝗥𝗘𝗘 𝗖𝗢𝗡𝗦𝗨𝗟𝗧𝗔𝗧𝗜𝗢𝗡: Let's talk about your project to see if we are a good fit for each other or not. Or even though if we don't work together, at least I may have suggestion(s) that can be helpful to your project. Just click on the '𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯' button and we can go from there. 𝗧𝗵𝗮𝗻𝗸 𝘆𝗼𝘂 for spending your $$ to review my profile because TIME IS MONEY :) If you really need 𝗚𝗼𝗼𝗱 𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗔𝗽𝗽 then 𝗛𝗶𝗿𝗲 𝗠𝗲. Thanks! Also... Latest expertises: - Augmented Reality, Internet Of Things (IoT), Beacon, Ricoh Theta 360 - Blockchain, Cryptocurrency, Etherum, Smart Contract, ECR20, DApps, ICO, IEO, Token, Crypto Exchange. Thanks:) Dhaval

🏆 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.