Are you looking for an experienced iOS developer who can build, improve, or scale your Apple application with clean architecture, excellent performance, and production-ready code?
I'm Taufiq Giri, a Senior iOS Developer with 5+ years of experience building high-quality applications for iPhone, iPad, Apple Watch, and Mac. I've successfully delivered 20+ applications across various industries, including AI, digital banking, fintech, healthcare, education, e-commerce, productivity, HRMS, fitness, and social networking.
I specialize in building native Apple applications using Swift, SwiftUI, and UIKit, while also providing complete mobile solutions with React Native, Capacitor, Firebase, Supabase, and Node.js when projects require cross-platform development or backend services.
Whether you need a brand-new MVP, feature enhancements, AI integration, backend development, performance optimization, bug fixing, or App Store deployment, I can help transform your ideas into reliable, scalable, and user-friendly applications.
🚀 Core Expertise
Apple Platform Development:
• Native iOS Development (Swift, SwiftUI, UIKit)
• iPadOS, watchOS & macOS Development
• Apple Human Interface Guidelines (HIG)
• MVVM, VIPER & MVC Architecture
• App Performance Optimization
• Bug Fixing & Code Refactoring
Backend & Cloud:
• Firebase (Authentication, Firestore, Storage, Cloud Messaging)
• Supabase
• Node.js & Express.js
• PostgreSQL
• CloudKit
• REST APIs & GraphQL
• Third-party SDK Integration
Apple Frameworks:
• HealthKit
• WatchKit
• WidgetKit
• Core Data
• SwiftData
• Realm
• MapKit
• Core Location
• AVFoundation
• Authentication (Apple, Google, Firebase, OAuth)
Monetization & Distribution:
• StoreKit
• RevenueCat
• Superwall
• In-App Purchases & Subscriptions
• Push Notifications (APNs & Firebase Cloud Messaging)
• TestFlight
• App Store Connect
• App Store Submission & Review
AI & Modern Development:
• OpenAI API Integration
• Google Gemini API Integration
• AI-powered Mobile Applications
• Claude Code
• OpenAI Codex
• AI-assisted Development Workflow
💡 Services I Offer
✅ Native iOS App Development
✅ SwiftUI & UIKit Development
✅ Apple Watch (watchOS) Applications
✅ macOS Applications
✅ React Native Development
✅ Capacitor Mobile Applications
✅ Backend Development (Firebase, Supabase, Node.js)
✅ API Integration
✅ AI Integration (OpenAI & Gemini)
✅ In-App Purchases & Subscription Systems
✅ Push Notifications
✅ Firebase & Cloud Services
✅ Bug Fixing & Performance Optimization
✅ App Store Deployment & Release Management
✅ Long-term Maintenance & Feature Development
🌍 Industries I've Worked With
• AI Applications
• Digital Banking & Fintech
• Healthcare
• Fitness & Wellness
• E-commerce
• Education
• HR Management Systems
• Productivity Apps
• Social Networking
• Job Portals
⭐ Why Clients Choose Me
✔ Production-ready, clean, and maintainable code
✔ Strong communication and transparent progress updates
✔ Pixel-perfect UI following Apple's Human Interface Guidelines
✔ Reliable delivery with attention to performance and scalability
✔ Experience building applications used by real users
✔ Comfortable working independently or as part of an existing development team
✔ Long-term support after launch
🛠 Technologies
Mobile: Swift • SwiftUI • UIKit • React Native • Capacitor
Backend: Firebase • Supabase • Node.js • Express.js • PostgreSQL • CloudKit
Frameworks: HealthKit • WatchKit • WidgetKit • StoreKit • RevenueCat • Superwall • Core Data • SwiftData • Realm • MapKit • AVFoundation
Development: REST API • GraphQL • Git • GitHub • Xcode • TestFlight • App Store Connect
AI: OpenAI API • Gemini API • Claude Code • OpenAI Codex
If you're looking for a developer who values quality, communication, and long-term collaboration, I'd be happy to discuss your project.
Feel free to send me an invitation or message. I'd love to learn more about your project and help bring your ideas to life.
Apple Watch
iOS
Swift
SwiftUI
UIKit
HealthKit
WatchKit
In-App Purchases
Core Data
CloudKit
iOS Development
Apple Xcode
Apple HealthKit
watchOS
iPadOS
Trinh N.
Hanoi, Vietnam
$30/hr
5.0
50 jobs
🚀 Ranked #1 iOS Developer on Upwork in Vietnam 🇻🇳
Trusted by startups and growing businesses to build, launch, and scale native iOS apps
With 9+ years of experience in Apple development, I've helped startups, SaaS companies, and growing businesses transform ideas into high-quality native iOS applications used by thousands of users.
Whether you're launching a new product, modernizing an existing app, or bringing your Android/Web platform to iOS, I deliver scalable, maintainable solutions with clean architecture and an exceptional user experience.
What I can help your business with
- End-to-end iOS app development
- Native iOS apps using Swift & SwiftUI
- Convert Android/Web apps into iOS apps
- MVP development for startups
- Long-term product maintenance & scaling
- Performance optimization & refactoring
- UI/UX implementation with pixel-perfect accuracy
- App architecture improvement & technical consulting
- Team collaboration and Agile/Scrum workflow
Technical Expertise
- UI Development: UIKit, SwiftUI, Auto Layout, Core Animation
- Reactive Programming: RxSwift, Combine
- Networking & API Integration: RESTful APIs, URLSession, Alamofire
- Backend & Cloud Services: Firebase, Firestore, Authentication, Analytics
- Push Notifications: APNs, Firebase Cloud Messaging (FCM), OneSignal
- Architecture Patterns: MVVM, Clean Architecture, Modular Architecture
- Local Storage & Database: CoreData, UserDefaults, Realm
- Media & Realtime Features: AVFoundation, WebSocket
- AI & AR Features: CoreML, ARKit, Vision Framework
- Authentication & Security: OAuth, JWT, Keychain
- Maps & Location Services: MapKit, CoreLocation, Google Maps SDK
- Testing & Debugging: XCTest, Instruments, Memory Leak Detection
- CI/CD & Version Control: Git, GitHub, Fastlane, Xcode Cloud
- Project Management: Agile, Scrum, Jira, Trello
Why clients work with me
- 9+ years of professional iOS experience
- Successfully launched and maintained production apps
- Strong focus on clean, maintainable, scalable code
- Clear communication and reliable delivery
- Experience collaborating with startups and remote teams
- Detail-oriented with strong debugging and problem-solving skills
- Long-term partnership mindset
I care about building stable products that support real business growth — not just writing code.
If you’re looking for a reliable iOS engineer to build, improve, or scale your mobile product, let’s connect.
Apple Watch Application
iOS
Swift
Objective-C
UIKit
Agile Project Management
SwiftUI
Firebase
Apple Xcode
iOS Development
Storyboard
REST API
AI Agent Development
Auto Layout
Mobile App Development
watchOS
macOS
tvOS
Samea A.
Clarksburg, Maryland
$15/hr
5.0
55 jobs
Hi there! 👋
I'm Samea Ahmadi, a dedicated App & Product Testing professional with a sharp eye for detail and a strong focus on real user experience. With over 5 years of experience, I help developers, startups, and e-commerce brands ensure their apps and products are user-friendly, bug-free, and ready for the market.
I don’t just click around — I analyze how real users will interact with your product. My feedback is always practical, honest, and actionable.
✅ What I Offer:
- Mobile App Testing (iOS & Android): Functional, usability, and UI testing
- Product Testing (Physical & eCommerce): Testing Amazon and online products as a real customer
- Detailed Feedback & Honest Reviews based on real user experience
- Bug Identification & Improvement Suggestions
- Test Reports with Screenshots or Screen Recordings
- Unboxing Experience & First Impressions Testing
- Fast Turnaround, Clear Communication, and NDA-friendly service
Fast turnaround and clear communication
I’ve tested apps for both iOS and Android, and I understand how crucial user feedback is in the development process. Whether you’re launching a new feature or validating your MVP, I’ll help you move forward with confidence.
📩 Ready to make your app or product better? Let’s talk!
Testing
QA Testing
Mobile App
iOS
Android
Amazon
A/B Testing
Product Testing
Expert
Email
Product Video
Mobile QA
Mobile App Testing
Muhammad Zaheer K.
Lahore, Pakistan
$20/hr
4.9
25 jobs
💯 Job Success | Top Rated | 7 Years Experience | Senior Mobile Developer for iOS & Android
𝙔𝙤𝙪𝙧 𝙖𝙥𝙥 𝙙𝙚𝙨𝙚𝙧𝙫𝙚𝙨 𝙢𝙤𝙧𝙚 𝙩𝙝𝙖𝙣 𝙟𝙪𝙨𝙩 𝙘𝙤𝙙𝙚. 𝙄𝙩 𝙙𝙚𝙨𝙚𝙧𝙫𝙚𝙨 𝙘𝙖𝙧𝙚.
I'm a senior mobile developer with 7 years of experience building React Native apps for iOS and Android. I work on apps that run in production and handle real users.
📱 WHAT I BUILD
✅ React Native and Expo apps from first screen to App Store
✅ AI features inside mobile apps using OpenAI and LLM APIs
✅ Apple Watch and wearable integrations
✅ Real-time features and push notification systems
✅ Node.js and Firebase backends powering your mobile product
✅ App Store and Google Play publishing via EAS Build and Fastlane
✅ Bug fixes and performance work on live production apps
🏆 WHAT I'VE ACTUALLY BUILT
Healthcare app — built and maintained a mobile app used by real patients over a multi-month engagement. Clean UX, stable performance and consistent 5-star delivery throughout.
Fitness iOS app with AI — integrated LLM API features into a React Native app running on device in production. Full chain from API integration through to structured output on screen.
Apple Watch companion — built a health and performance app for wearable that connects watch data to the main iOS app. Most React Native developers can't touch this level of native integration.
Live production crash fix — a client's Expo app was crashing in production. Fixed it before they noticed. Their words: "fixed the bug before I even noticed it. Quality and delivery time were beyond my expectations."
Long-term React Native project — maintaining and shipping new features for over a year with consistent 5-star delivery across every milestone.
⚙️ HOW I WORK
I communicate early when something is off and flag problems before they become crashes. Clients describe me as reliable, committed to quality and detail-oriented across every engagement.
💻 TECH STACK
React Native · Expo · TypeScript · iOS · Android · Ionic · Capacitor.js · Firebase · Supabase · Node.js · OpenAI API · EAS Build · Fastlane · Push Notifications · App Store · Google Play · React · Next.js · CI/CD · GitHub Actions
🎯 WHO I WORK WITH
Startup founders and product teams building real mobile products. If you have an app to build, an existing app that needs new features or fixing, or a product that needs AI added to the mobile experience — message me with what you're building and I'll respond within a few hours.
Your app is not just a project to me. It's someone's idea that deserves to work.
🎯 Message me today. I usually respond within a few hours.
React Native
Flutter
iOS
Android
Swift
Kotlin
watchOS
React
TypeScript
JavaScript
Android Studio
Apple Xcode
Android SDK
Next.js
Google APIs
ESLint
Tailwind CSS
Taras C.
Kyiv, Ukraine
$35/hr
5.0
25 jobs
Senior iOS / iPadOS / watchOS / tvOS / macOS Developer — 7 years, 15+ shipped apps, 1M+ users reached.
I build native Apple apps end to end: idea → architecture → UI → App Store → post-launch iteration. Swift & SwiftUI first, clean architecture, and no shortcuts that cost you later.
✅ PROVEN RESULTS
⭐️ Shipped and maintained an app with 1,000,000+ users (core team of 3).
⭐️ Kept a 150,000-user app at 99.96% crash-free (team of 2).
⭐️ Led products from idea → design → refinement → implementation → release.
⭐️ 15+ delivered projects across iPhone, iPad, Apple Watch, Apple TV and Mac.
⭐️ Built my own apps: a spaced-repetition learning app (Ebbinghaus forgetting curve) and an enhanced music player.
🎯 WHAT I CAN DO FOR YOU
▸ Build a new iOS app from scratch — MVP in weeks, not quarters
▸ Rescue or refactor a legacy Objective-C / messy Swift codebase
▸ Kill crashes, memory leaks, slow launch time and laggy scrolling
▸ Get you through App Store review (rejections, privacy, ATT, guidelines)
▸ Add monetization: subscriptions, in-app purchases, paywalls, ads
▸ Port an iPhone app to iPad, Apple Watch, Apple TV, CarPlay or macOS
▸ Take over an abandoned project and actually ship it
🛠 TECH STACK
🟢 Languages: Swift, Objective-C, Python (basic)
🟢 UI: SwiftUI, UIKit, AutoLayout, SnapKit, Core Animation, WidgetKit, Live Activities, App Clips, Dark Mode, Accessibility / VoiceOver, Localization
🟢 Architecture: MVVM+C, VIPER, TCA, MVC, Clean Architecture, SOLID, Facade, Adapter, Decorator, Factory Method, Singleton, Builder, Observer, Command
🟢 Concurrency: Swift Concurrency (async/await, actors), GCD, OperationQueue
🟢 Reactive: Combine, RxSwift, ReactiveSwift, ReactiveCocoa
🟢 Networking: REST API, URLSession, Alamofire, Moya, AFNetworking, GraphQL (Apollo), WebSockets, Socket IO
🟢 Data: Core Data, Realm, SQLite, SwiftData, CloudKit, Keychain, Firebase Cloud Firestore, Firebase Realtime Database
🟢 Apple frameworks: Foundation, MapKit, Core Location, AVFoundation, AVKit, HealthKit, StoreKit 2, PassKit, EventKit, HomeKit, SiriKit, App Intents, PushKit, WatchKit, TVMLKit, WebKit, SpriteKit, Core Bluetooth, Core Motion, Core ML, Vision, Speech, Contacts, CarPlay
🟢 Services & SDKs: Firebase (Analytics, Crashlytics, Remote Config, Dynamic Links), OpenAI API, Stripe, Apple Pay, Twilio API, Google Maps, Google Places, Google AdMob, Facebook SDK, Sign in with Apple, Amplitude, Mixpanel, Sentry, RevenueCat, OneSignal
🟢 Quality & CI/CD: XCTest, unit & UI testing, Fastlane, Xcode Cloud, GitHub Actions, Bitrise, SwiftLint, Xcode Instruments, TestFlight, App Store Connect, code review
🟢 Tools: Xcode, Git, GitHub, Sourcetree, SPM, CocoaPods, Carthage, Figma, Sketch, Zeplin, Postman, Proxyman
🟢 Process: Agile, Scrum, Kanban, JIRA, Trello, ClickUp
💡 FEATURES I'VE SHIPPED
In-App Purchases & subscriptions · Payment Gateway Integration · Push Notifications · User Authentication & User Profile Creation · Chat & Messaging · Map Integration & Location-Based Services · Bluetooth / BLE · Camera & Photo · Microphone & Audio · QR & Barcode Scanner · Offline Functionality & Sync · Deep Links & Universal Links · Social Media Account Integration · In-App Search · AI Text-to-Speech · Face Detection · Motion Sensors · Advanced Analytics & A/B Testing · In-App Advertising · Review & Feedback Collection · Application Security · API Integration · In-App Support
📦 SERVICES
Native App Development · Mobile App Development · Mobile App Redesign · Mobile App Improvement · Mobile App Bug Fix · Mobile App Testing · Mobile App Localization · App Store Optimization · Mobile App Development Consultation · iPhone & iPad Apps · Apple Watch Application · Apple TV Application · macOS Application
🤝 HOW I WORK
✔️ Clear English, regular updates, no disappearing acts.
✔️ Your timezone matters — I overlap with both US and EU hours.
✔️ Estimates you can plan around, and a heads-up the moment something changes.
✔️ Clean, documented, testable code that you or your next developer can own.
✔️ NDA-friendly — your idea stays yours.
Thanks for reading this far 🙂
Tell me what you're building, and I'll reply with an honest estimate plus the first thing I'd fix
Apple Watch
iPad App Development
Apple Xcode
iOS
SwiftUI
Swift
UIKit
RESTful API
iOS Development
Push Notifications
tvOS
watchOS
iOS SDK
Mobile App Development
AI Mobile App Development
App Development
iPhone
iPhone & iPad Apps
AI App Development
App Store Optimization
Bohdan D.
Lviv, Ukraine
$35/hr
4.9
32 jobs
30+ iOS apps live on the App Store. 10+ years of dedicated Apple development. 100% Job Success Score.
I am not a generalist who "also does mobile." This is all I do.
Most developers spread themselves thin across React Native, Flutter, Android, and whatever else is trending. I made a different choice: go all-in on Apple and become genuinely world-class at it. Every project I ship runs on pure Swift and SwiftUI — no cross-platform shortcuts, no compromises on performance, and zero sacrifices on native feel.
What my Apple-exclusive focus means for your budget & timeline:
⚡ No learning curve: I know Xcode, App Store Connect, and TestFlight cold — you don't pay for my research.
⚡ Scalable architecture: Solid foundations from day one mean no expensive rewrites 6 months down the road.
⚡ Zero surprise rejections: I know the App Store Review Guidelines inside out.
⚡ Advanced Apple features done right: Smooth implementation of WidgetKit, Live Activities, iCloud sync, StoreKit 2, and Sign in with Apple.
🛠 Tech Stack I Use Every Day:
Swift • SwiftUI • UIKit • CoreData • CloudKit • WidgetKit • StoreKit 2 • HealthKit • WatchKit • XCTest • Fastlane • TestFlight
📈 My Track Record on Upwork & Beyond:
Top Rated badge with a 100% Job Success Score
10+ years of iOS experience (5+ years delivering top-tier projects on Upwork)
30+ shipped apps with 4.5★+ average ratings
10,000+ combined app downloads
🤝 I work best with:
Founders and product teams who want a developer who cares about the product's success, not just closing Jira tickets. If native feel, flawless App Store performance, and clean Swift code matter to you — we’ll be a perfect fit.
Let’s talk:
Drop me a message with a brief overview of what you're building. I respond within a few hours and am happy to jump on a quick discovery call to see how I can help bring your app to life.
Updated: 14.08.26
Desktop Application
iOS Development
Swift
Objective-C
iOS
Mobile App Development
Apple Xcode
SwiftUI
macOS
Firebase
iPad App Development
API Integration
Smartphone
Mobile App Design
JavaScript
Python
In-App Purchases
Web Development
API
Graphic Design
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