I'm a Senior iOS Engineer with 8+ years of experience delivering high-quality mobile applications using Swift, SwiftUI, and UIKit. I specialize in clean architecture patterns (MVVM, VIPER), rapid MVP delivery, and full-stack feature ownership — from backend to polished UI. **iOS Development** Swift · SwiftUI · UIKit · MVVM · VIPER · Combine · Swift Concurrency · Custom UI Components · Animation Systems · Video Editing Features **Backend & APIs** Python · Django REST Framework · RESTful API Design · Real-time Chat Backends · WebSockets · Geolocation Services **Database & Infrastructure** Supabase (Postgres + Auth + Storage) · Neon (Serverless Postgres) · Upstash (Redis) · Firebase · Django ORM **Location & Mapping** CoreLocation · Google Places API · Geospatial queries · Location-aware backend APIs **AI-Assisted Development** Claude AI · Cursor · Rapid prototyping workflows for faster MVP delivery --- **What I Bring to Your Project** - **Full-Stack Feature Ownership** — I've built and shipped complete features end-to-end: designed Django REST APIs, wired up Redis caching via Upstash, deployed on Neon, and implemented the entire iOS client side - **Real-Time Chat Systems** — Architected custom chat backends and matching iOS implementations with live message sync - **Location-Based Features** — Built geolocation pipelines from backend query to CoreLocation-powered iOS UI - **Supabase Integration** — Deep experience with Supabase across auth, storage, real-time subscriptions, and iOS SDK integration - **Rapid MVP Development** — Concept to working product fast, using AI-assisted workflows without sacrificing code quality - **Clean Architecture** — Maintainable, scalable codebases using MVVM/VIPER that your team can actually build on --- **Recent Project Highlights** - Built a custom in-app chat system: Django REST + WebSocket backend, Upstash Redis for presence/caching, Neon Postgres for persistence, full iOS client with real-time message sync - Developed location-aware features with geospatial backend APIs (Django) and CoreLocation + Google Places on the iOS side - Shipped Supabase-powered apps with auth, file storage, and real-time data sync across backend and iOS - Delivered restaurant discovery and management apps from scratch to App Store - Modernized legacy iOS codebases, improving architecture and long-term maintainability --- Whether you need a backend + iOS feature built end-to-end, a polished MVP shipped fast, or expert help untangling a complex iOS codebase — I'm here to deliver.

iOS developer with 3+ years of experience building scalable, production-ready apps — from new MVPs to complex UIKit-to-SwiftUI migrations. I help founders and product teams ship fast while keeping codebase quality, performance, and long‑term maintainability under control. What I can do for you: • Design and build new iOS apps from scratch (Swift, SwiftUI) • Refactor and migrate legacy UIKit apps to SwiftUI safely and incrementally • Stabilize existing apps: bug fixing, crashes, performance issues, App Store rejection fixes • Implement Clean Architecture, MVVM, VIPER for testable, scalable codebases • Build AI-powered features using Core ML, OpenAI APIs, and custom ML models • Integrate Firebase, REST APIs, and third‑party SDKs (analytics, payments, auth, etc.) • Implement In‑App Purchases and Push Notifications • Handle App Store releases, CI/CD setup, and ongoing maintenance Tech stack: Swift, SwiftUI, UIKit, Combine, async/await Firebase, REST, HTTP/HTTPS, JSON iOS, macOS, watchOS, tvOS Git, GitHub, Jira, Trello Unit testing, XCTest Why clients work with me: • 100% Job Success, Top Rated Plus on Upwork • Fast onboarding, clear communication, and clean, maintainable code • Focus on long‑term architecture, not just “getting it to work” If you need an iOS developer who can quickly plug into your team, improve an existing app, or ship a new AI‑powered product, send me a message and let’s discuss your project.

As a seasoned programmer, I bring a wealth of technical expertise and a proven track record in native and cross platform mobile app development for iOS and Android platforms. My skills encompass a wide array of functionalities, including Push and APNS, Geo-fencing, Payment processing (card readers), maps, mobile device management, QR code scanners, Blockchain and integrations with services such as Paypal, Stripe, and Parse. In addition to mobile and backend development, I have hands-on experience integrating AI-powered solutions into applications, including intelligent chatbots, recommendation engines, predictive analytics, Computer Vision and automation workflows. I have worked with modern AI tools including Claude, APIs and frameworks to enhance user experience through personalization, smart insights, and real-time decision-making. Listed below is an overview of my skills and the tools I have worked with. Languages : Flutter, FlutterFlow, Dart, React.js, React Native, SwiftUI, Objective-C, Kotlin, T-SQL, C#, JavaScript (ES6+), HTML5, Swift 5+, CSS3, TypeScript, Python, JSON Frameworks : Core Foundation, iOS SDK, Core Data, Core Video, Core Location, MapKit, Social Framework, Core Media, AVAudioEngine, Flutter SDK, Material & Cupertino Widgets, Jetpack Compose (basic) Libraries / APIs : Core Animation, Facebook SDK, jQuery, Google Maps SDK, AFNetworking, CocoaPods, SQLite, Core Graphics, SpriteKit, Parse iOS SDK, Mixpanel SDK, MailChimp API, Node.js, Supabase, Firebase (Auth, Firestore, FCM, Crashlytics), REST APIs, GraphQL, WebSockets Tools : iOS Simulator, Apple Xcode, Android Studio, Visual Studio, VS Code, Git, Bitbucket, GitHub, SVN, Postman, Firebase Console, Fastlane, TestFlight, MailChimp, Jira Platforms : iOS 15–26, Android 10–15, Flutter Mobile (iOS & Android), Flutter Web, Flutter Desktop (Windows, macOS, Linux) CMS / ERP / CRM : Django-Oscar, Django-SHOP, Mezzanine, Odoo – OpenERP (Open Source ERP & CRM), Headless CMS, Custom Admin Dashboards Web / Backend Tools : jQuery, Yahoo UI Library, AngularJS, SQLAlchemy, Peewee, Motor, PyMongo, Django MongoDB Engine, Express.js, NestJS Server end : Azure, Firebase, Google Cloud Functions, AWS (EC2, S3, Lambda), Docker, CI/CD Pipelines Paradigms : Agile Software Development, Scrum, Kanban, MVC, MVVM, Clean Architecture Misc : iOS Video, Backend Integration, Stripe Payments, PayPal, Fintech, Push Notifications, Real-time Sync, Barcode & QR Code (QR Code, DataMatrix, Code39, Code128, PDF417, AZTEC, UPC, EAN) Storage : Microsoft SQL Server, Firebird, MySQL, SQLite, MongoDB, DynamoDB, Redis, MemSQL, Firebase Firestore, Cloud Storage Core specialization in: - Fintech apps- Payments apps, digital wallets, Loyalty rewards, stock trading, referral - Utility apps- Call recorder, keyboard, food delivery - Communication- social networking, audio/video calling - Real estate apps - IoT- BLE/ibeacons, Healthcare - On demand service booking apps - Sports apps - AI & Machine Learning – Predictive analytics, recommendation systems, personalization, chatbots, fraud detection, intelligent automation These verticals can be verified from my profile too. I'm well versed in using wallet based SDKs including Mastercard, Pay- Pal, Braintree, Simply Commerce, Quickpay, Razorpay SDK etc for e-wallet based applications. I have worked extensively with stock trading apps with vast knowledge in exante.eu, Meta trader 5, socket based programming for real time stock price alerts. I can integrate a number of crypto-currency wallets for your app including Bit-coin Core, Electrum, Jaxx cryptocurrencies, Rippex and Exodus that offer an easy-to-use interface, better protection against fraud, Lightweight and easy to set up and easy recovery for BTC using a wallet seed. I thrive on challenges and exhibit hyperactivity when problem-solving. My ability to think deeply and beyond the obvious sets me apart. Let's collaborate and discuss your ideas. I can help you achieve the best solutions for your business needs. I just completed one of my ongoing projects and currently seek new avenues.

I’m a Senior iOS Developer with 7+ years of experience building high-performance, scalable, and App Store-ready applications. I specialize in developing native iOS applications using Swift, SwiftUI, and UIKit, with a strong focus on clean architecture, exceptional user experience, and long-term maintainability. Over the years, I have successfully delivered applications across fintech, healthcare, fitness, social networking, AI-powered platforms, media streaming, document management, and subscription-based products. From MVP development to enterprise-grade solutions, I help businesses transform ideas into polished and reliable iOS applications. I take ownership of the entire development lifecycle from planning and architecture to deployment and post-launch support ensuring every app meets Apple's standards and delivers a seamless user experience. 💡 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ✅ Native iOS Development (Swift, SwiftUI, UIKit, Objective-C) ✅ AI Integration (OpenAI, Claude, ChatGPT) ✅ Real-Time Audio & Video Streaming ✅ Video Editing & Media Processing Applications ✅ BLE & IoT Device Integration ✅ OCR, Document Scanning & PDF Management ✅ Maps & Location-Based Applications ✅ Firebase, AWS & Backend Integrations ✅ Subscription & In-App Purchase Systems ✅ Performance Optimization & Memory Management ✅ App Store Submission & Approval Support 🧠 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐤𝐢𝐥𝐥𝐬 • Swift, SwiftUI, UIKit, Combine • AVFoundation, Vision Framework, CoreML • Firebase, AWS, REST APIs, WebSockets • RevenueCat, Superwall, StoreKit • CoreData, SwiftData, Realm • Google Maps, MapKit, CoreLocation • BLE, CoreBluetooth, IoT Connectivity • Push Notifications, Authentication & Security • GitHub, GitLab, Bitbucket, CI/CD 📱 𝐓𝐲𝐩𝐞𝐬 𝐨𝐟 𝐀𝐩𝐩𝐬 𝐈 𝐁𝐮𝐢𝐥𝐝 • AI-Powered Applications • Fintech & Payment Solutions • Healthcare & Wellness Apps • Fitness & Sports Applications • Video Streaming Platforms • Document Scanner & OCR Apps • Social Networking Applications • Marketplace & E-Commerce Apps • SaaS Mobile Applications • Enterprise Business Solutions 🌟 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 ✔ 7+ Years of Professional iOS Development Experience ✔ Clean, Scalable & Maintainable Code ✔ Pixel-Perfect UI Implementation from Figma ✔ Strong Problem-Solving & Architecture Skills ✔ Reliable Communication & Fast Response Time ✔ End-to-End Product Development Support ✔ Extensive App Store Release Experience 🔧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 1️⃣ Requirement Analysis & Technical Planning 2️⃣ UI/UX Implementation 3️⃣ Scalable App Development 4️⃣ Testing & Quality Assurance 5️⃣ App Store Deployment 6️⃣ Post-Launch Support & Maintenance 📅 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 ⏰ 40+ Hours Per Week 🤝 Long-Term & Short-Term Projects 💬 Dedicated and Reliable Communication 🌍 Flexible with Time Zones 📩 If you're looking for an experienced iOS developer who can build secure, scalable, and user-friendly applications, I'd be happy to discuss your project and help bring your vision to life.

🎓 7+ Years Experience | 🚀 100+ Mobile & Web Apps Delivered Hi, I am Abdul Hanan — a Full-Stack Developer with over 7 years of expertise in building scalable, high-performance applications. I specialise in end-to-end development, from crafting native and cross-platform mobile apps with Kotlin, SwiftUI, Flutter, and React Native to engineering robust backend systems with PHP, Laravel, NodeJS, GraphQL, MongoDB, Firebase, and Supabase. 🗂️ Proven Domain Experience: • Food Delivery & E-Commerce Apps • Real-Time Chat & Social Applications • Audio Streaming & Multimedia Apps (Music, Podcasts) • Booking & Reservation Systems • Travel, Map & Entertainment Apps • Educational & E-Learning Platforms • AI & ML Integrated Applications • Utility & Productivity Tools 🛠️ Core Technical Expertise: 📱 Mobile & Cross-Platform Development: • Languages: Kotlin, Java, SwiftUI, C-Objective, JavaScript, Dart • Frameworks: Flutter, React Native, Expo, Native Android, Native iOS • Architectures: MVVM, MVC, Clean Architecture, BloC, Provider, GetX, RxDart 💻 Backend & Full-Stack Proficiency: • Backend Technologies: PHP, Laravel, GraphQL, MongoDB, Node.js • Databases: MySQL, PostgreSQL, Firebase Firestore, Supabase, Room • Integrations: Stripe, Google/Apple Pay, Google APIs, InApp-Purchase, Subscriptions (Play-Store/App-Store), OTP & Email Auth ✅ Development Standards & Key Capabilities: I am committed to delivering well-optimised, clean, robust, and well-commented code using qualified naming conventions. My development process ensures applications are built to the highest standards, featuring: • Multi-Language Support & Localization. • Seamless API & Web Service Integration. • Performance Optimisation & Security Best Practices. Client satisfaction and clear, proactive communication are my top priorities. I AM AVAILABLE TO DISCUSS YOUR PROJECT AND BRING YOUR IDEAS TO LIFE WITH A HIGH-QUALITY, PROFESSIONAL SOLUTION.

Hello there! I Have 7+ years of experience as mobile application developer. I've created several projects of different natures for professional folks like yourself. Have a pretty good grip on Swift, Swift UI, and regarding ReactNative I have worked around 1.5 years on that. Major iOS framework that I work upon on daily basis: AuthenticationServices BackgroundTasks UIKit MapKit CoreData WebKit UserNotifications Beyond my technical skills, I have solid management and communication skills which I’ve groomed over the years while studying at university and working in both large and small companies. I’ve worked at some of Pakistan’s top software companies with clients worldwide – in several leadership roles. I’ve had the chance to work with clients from across the world, both through Upwork and at the companies I’ve worked at, which has given me extensive exposure in ensuring I meet timelines and maintain communication, irrespective of time zones. I am looking forward to hearing from you!

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

🟢 AVAILABLE TODAY, 14.07 ⚡ Message me "AUDIT" - get a free 30-min Swift & iOS technical review of your app idea, architecture, or existing Swift codebase. No sales pitch. Just honest Swift engineering feedback. I'm Siarhei - Swift & Kotlin engineer, ex-CTO x 3 funded startups, CEO of Sparkler Soft. We build native iOS (Swift) and Android (Kotlin) products that ship, scale, and raise. 🔵 PROVEN RESULTS ◈ iHairium - AI Hair Diagnostics (Swift, live on App Store) Native Swift + Core ML neural network 100K+ training images, 95-98% accuracy $600K angel round + $5M seed valuation Revenue x10 to x1000 per month in early stages Google & Amazon grants, 1,000+ clinic partners onboarded ◈ Eco-Go - Electric Scooter Sharing Platform Swift (iOS) + Kotlin (Android) + Backend + IoT + Admin Panel AWS IoT Device Management, swappable battery infrastructure Named "Best Startup of the Region" ◈ BLE Wearable App (Swift + Kotlin, App Store + Google Play) HealthKit + Health Connect + RevenueCat subscriptions BLE background sync, AWS IoT Core Shipped on schedule, 5.0 client review ◈ Optics Platform (White-label, Strict NDA) Swift + Kotlin, AI-assisted frame & lens selection via device camera Active in 60+ countries, 1,000+ fitting points worldwide 10+ years on market, award-winning at international exhibitions ◈ Chibbis - Unified Food Delivery Service Swift (iOS) + Kotlin (Android) + Web + Admin Panel + CMS 600+ restaurants, 150+ cities One of the country's leading delivery platforms ◈ CoinForShop - Crypto Marketplace Swift (iOS) + Kotlin (Android) + Web (React) Non-custodial wallets, smart contract payments BTC, ETH, BCH, LTC, XMR, TRX, 100% MVP delivered ◈ Azarium - NFT Real Estate Investment Platform Swift + Kotlin, fractional property ownership via blockchain MAS-regulated, live construction webcam in-app Min investment from $200, expected ROI 30-60% 🟠 WHAT WE BUILD WITH SWIFT AND KOTLIN - Native iOS (Swift, SwiftUI, UIKit, Objective-C) - Native Android (Kotlin, Java) - Swift + Kotlin full product: app + backend + admin panel + CMS - HealthTech and AI - Swift Core ML, on-device neural networks, camera diagnostics - TensorFlow Lite, OpenCV, real-time image analysis in Swift - FinTech and Crypto - Swift + Kotlin wallets, KYC/AML, Stripe, smart contracts, NFT - Mobility and IoT - Swift + Kotlin: GPS, BLE, AWS IoT, scooter and bike sharing - Telematics, real-time fleet management - Marketplace and Delivery - Full-stack Swift + Kotlin: app + backend + admin panel + CMS - API Integrations - Stripe, Mapbox, Sumsub, Firebase, HealthKit, any third-party 🟡 SWIFT AND KOTLIN TECH STACK - Mobile: Swift, SwiftUI, Objective-C, UIKit, Kotlin, Java - Backend: Java Spring Boot, Node.js, NestJS, Golang - Frontend: React, Next.js - AI/ML: TensorFlow Lite, Core ML (Swift), OpenCV - Cloud: AWS, GCP, Azure, Docker, Kubernetes, CI/CD - Data: PostgreSQL, MongoDB, Redis, Elasticsearch - Security: OAuth2, OIDC, JWT, Keycloak, Biometrics, IAP (Swift StoreKit) 👉 Message "AUDIT" right now - 30 minutes to understand if our Swift and Kotlin team is the right fit. No obligation. No pitch. Just clarity.

Experience iOS/Android/Flutter/Web application Developer I am a freelance iOS | Android | Flutter | React Native | ReactJS | AngularJS | NextJS | PHP | Web App developer | C# | Asp.net |.netCore | Python | VueJS || NodeJs | Django | Tastypie | DRF(Django Rest Framework) | Rest API | Data Modelling | & UI/UX - Web designer who enjoys being part of, as well as leading, a successful and productive team. Have very good knowledge on iOS, Android development, Cross Platform(Flutter), Web-Development. I believe I have: Ability to provide best services to the clients to meet their needs. Ability to work independently as well as a team owner. Ability to work under pressure, Dependable, Highly-Organized, Self-Motivated, and Responsible. The name of quality: » You will get the best works from me. » I am Able to work with your timeline and Preferred Timezone. » I am highly skilled on Mobile Development. Tags: - XCode, Android Studio, Visual Studio Code, Microsoft Visual Studio - JIRA, Trello, Asana. - [VCS & NPM] Git repository (commit, push, pull, etc...), BitBucket. - GoToMeeting - Firebase - Social Media Integration - Payment Integration - Google AdMob. - Audio/Video Call Integration Why Work With Me? - High-quality, maintainable, and scalable code - On-time delivery with attention to detail - Ability to work independently or with cross-functional teams - Flexible to work in preferred timezone with agile communication - Focused on long-term partnerships with clients Services I Offer - Custom Native iOS & Android app development - Cross-platform mobile app development using Flutter & React Native - Full-stack web development (frontend & backend) - API development, integration, and third-party service implementation - UI/UX design for web & mobile applications - Bug fixing, app maintenance, and performance optimization I am very confident of my ability to work in a team. I would be grateful to work with any organisation and serve well. I am seeking an opportunity to become a business partner with long-term relationship forever. Feel free to contact me with any Mobile Development questions. I will be pleased to help you! Thanks for giving your precious time to read my profile. If you're looking for a dedicated full-stack developer and mobile app expert who ensures quality delivery and long-term support, let’s connect. I am confident that I can help bring your ideas to life and deliver solutions that exceed your expectations. Let’s build your next digital product together! Contact me today to get started.

I help startups and product teams build polished, production-ready mobile apps - from idea and MVP to App Store / Google Play release, backend integration, AI workflows, and long-term maintenance. My strongest background is native iOS development: Swift, SwiftUI, UIKit, Combine, performance optimization, clean architecture, and pixel-perfect UI implementation. I've spent years building real production apps with video, chat, media upload, feeds, payments, subscriptions, Firebase, push notifications, and complex custom interfaces. Today I also build AI-powered mobile apps end-to-end. That includes mobile app development, backend architecture, API orchestration, async job systems, and integration with AI / GPU providers such as RunPod, Replicate, OpenAI, Gemini, and custom ComfyUI workflows. I have also published my own apps on both the App Store and Google Play, so I understand product development not only from the engineering side, but also from the founder/product side: release requirements, store review, monetization, UX decisions, iteration, and production issues. What I can help you build Native iOS apps with Swift, SwiftUI, UIKit, Combine AI-powered mobile apps for image, video, music, chat, and automation Full-stack mobile products using Firebase, Supabase, APIs, and serverless functions RunPod / Replicate GPU pipelines for long-running AI tasks LLM features using OpenAI, Gemini, structured outputs, tools, and automation workflows Cross-platform apps with Flutter or React Native when speed matters Native Android features when the product needs Android support App Store and Google Play release, subscriptions, payments, push notifications Video-heavy apps with caching, processing, playback, and performance optimization Existing app modernization, refactoring, bug fixing, and long-term maintenance Recent relevant work LinkMe - media-heavy social app. Took ownership of a new chat feature from start to finish, including SwiftUI UI, business logic, API integration, media upload support, and production polish. Helped a new backend developer with product/business logic, created a dedicated Mac test target with integration tests to catch issues early, and supported the flow later used for Android chat integration. DanceMe - AI video generation app built from start to finish: native iOS, Firebase backend, App Check security, App Store payment verification, RunPod serverless GPU jobs, and a custom workflow based on open-source video models(Wan2.2, SCAIL). Cosplay AI - Flutter-based AI photo app published on both the App Store and Google Play, using Firebase backend and RunPod as the GPU provider for AI image generation(Z-Image, Qwen-Image-Edit). SongClip - React Native AI music and video generation app using Firebase backend and RunPod GPU infrastructure for long-running music/video generation jobs(ACE-Step, Qwen3 , LTX). Combine Videos - complex native iOS video editing app with a highly custom SwiftUI + UIKit interface, native video editing workflows, performance-sensitive media processing, and Metal usage. Video Matching, Grabglide - mobile products involving media, matching, custom UI, and production delivery How I work I'm not just looking to 'complete tickets'. I care about the product, architecture, user experience, release quality, and long-term maintainability. I use modern AI development tools like Codex and Claude Code to move faster, but I rely on senior engineering judgment to keep the codebase clean, stable, and production-ready. My usual process is: Understand the product goal and technical risks Build a clean foundation and reusable architecture Ship fast iterations without sacrificing maintainability Test, polish, release, and support the product after launch I prefer long-term collaboration, but I can also help with MVPs, AI integrations, app store launches, production fixes, and technical rescue work. If you need a senior mobile engineer who can own both the app experience and the AI/backend integration behind it, I can help. Technical stack Mobile: Swift, SwiftUI, UIKit, Combine, AVFoundation, Metal, Kotlin, Android, Flutter, React Native, Expo Backend: Firebase, Firestore, Auth, Cloud Functions, Storage, App Check, Supabase, PostgreSQL, Edge Functions, REST APIs AI / LLM: OpenAI, GPT, Gemini, LLM integrations, structured outputs, tool calling, AI copilots, automation workflows AI media: ComfyUI, Stable Diffusion, AI image generation, AI video generation, lip-sync, motion transfer, music generation, video clip generation GPU / infrastructure: RunPod Serverless, Replicate, async AI jobs, serverless GPU pipelines App features: payments, payment verification, subscriptions, RevenueCat, Stripe, push notifications, chat, media upload, video playback, caching, performance optimization Release: App Store, Google Play, TestFlight, Play Console, production support, long-term maintenance