Hire the Best Cocoa Developers in Hanoi, VN

More than 12 years of experience with native iOS application I believe that can bring the BEST thing for your product. Outside my area of expertise, I also good for building product and focusing on customer experience. My skills include: - Main Languages: Objective C, Swift, SwiftUI - Support Languages: C++, Python, NodeJS, Java, HTML... - Architecture: MVP, MVI, MVVM pattern & Clean Architecture... - Reactive programming: RxSwift, Combine - Database: Realm, CoreData, FireStore... - Design pattern: Dependency Injection, Mock, Singleton, Facade, Decorator... - Knowledge & Services : Socket, WebRTC, Google, Firebase, WebKit, Encrypt, Map, Proxy... - Source control: Git, SwiftLint, AppsFlyer, Clang, CI/CD ... - Domains: Browser, Social network, Comics, Education, Booking, E-commerce ... I'm not just a developer, let me be your companion so we can make it happen, if you WIN, I'll WIN. Thank you for giving me the opportunity to work with you.

🚀 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.

I deliver high-performance mobile and backend solutions for startups and SMBs using cutting-edge technologies. Mobile Development (iOS): • Swift, SwiftUI, UIKit, Objective-C • MVVM, VIPER, Clean Architecture • Firebase, CoreData, RESTful APIs • Combine, Swift Concurrency, RxSwift Backend Development (Java): • Spring Boot, Spring Security, Spring Data JPA • Microservices Architecture, REST APIs • MySQL, PostgreSQL, MongoDB • Docker, AWS, CI/CD pipelines Integration & Tools: • Third-party SDKs (Twilio, SendBird, Google Maps) • Git, Maven, Gradle, Postman • Xcode, IntelliJ IDEA, TestFlight What You Get: ✓ End-to-end development (mobile + backend) ✓ Scalable, secure architecture ✓ Direct work (no outsourcing) ✓ 100% client satisfaction guarantee Whether you need a complete mobile app with backend or just one piece of the puzzle, I've got you covered. Let's build something great together!

More than 10 years of experience with native iOS application I believe that can bring the BEST thing for your product. I believe one of the key reasons to choose me is that I focus on delivering a complete, high-quality product rather than just completing a set of tasks. I approach each project with ownership, thoughtful consideration, and a proactive mindset — offering insights and improvements based on my experience to help build the best possible solution, not merely following requirements mechanically. I have a profound knowledge in programming and the primary languages of App Development including : - Main Languages: Objective C, Swift, SwiftUI - Support Languages: C++, Python, NodeJS, Java, HTML... - Architecture: MVP, MVI, MVVM pattern & Clean Architecture... - Reactive programming: RxSwift, Combine - Database: Realm, CoreData, FireStore... - Design pattern: Dependency Injection, Mock, Singleton, Facade, Decorator... - Knowledge & Services : Socket, WebRTC, Google, Firebase, WebKit, Encrypt, Map, Proxy... - Source control: Git, SwiftLint, AppsFlyer, Clang, CI/CD ... - Domains: Chromium, Browser, Social network, Comics, Education, Booking, E-commerce ... I'm not just a developer, let me be your companion so we can make it happen, if you WIN, I'll WIN. Thank you for giving me the opportunity to work with you.