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VLAD SADOVNYK
iOS Developer (Swift / SwiftUI / UIKit)
[open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • github.com/hiroio • Telegram: @heyqoa • Ukraine

PROFESSIONAL SUMMARY
Results-driven iOS Engineer with 3 years of experience building and shipping commercial native iOS applications to the App Store.
Strong expertise in Swift, SwiftUI (Views, State/Binding, ViewModifiers, Navigation, @Observable), and Combine/async/await. Proven
track record in migrating legacy UIKit components to SwiftUI using interop layers (UIViewRepresentable/UIHostingController),
managing Core Data stacks with offline persistence, App Groups, and WidgetKit extensions. Experienced in optimizing REST API
networking with URLSession and Codable within cross-functional agile teams.

TECHNICAL SKILLS
Languages & Frameworks: Swift, SwiftUI (advanced navigation, State/Binding, ViewModifiers, @Observable), UIKit, Combine, Swift
Concurrency (async/await), WidgetKit
SwiftUI / UIKit Interop: UIViewRepresentable, UIHostingController, hybrid architecture refactoring
Persistence & Extensions: Core Data (stack initialization, nested contexts, background sync), App Groups, SwiftData, Firestore,
CloudKit, FileManager, Realm
Networking & Web: URLSession, REST APIs, Codable, GraphQL (Apollo), WebRTC, WebSocket
Architecture & Patterns: MVVM, Clean Architecture, Dependency Injection, Modular Architecture
Debugging & Optimization: Xcode Instruments (Time Profiler, Leaks), Memory Graph, Breakpoints, LLDB, automated testing
Tools, CI/CD & Analytics: Xcode, Git, Codemagic CI/CD, Firebase, StoreKit, AppsFlyer, UserNotifications

PROFESSIONAL EXPERIENCE
iOS Developer Jun 2025 – Jun 2026
NDA (Remote) | Utility & Gamification Mobile Products
• Developed and shipped utility and gamification apps end-to-end using SwiftUI, Combine, and Swift Concurrency.
• Refactored legacy UI components by migrating UIKit views to SwiftUI using UIViewRepresentable and UIHostingController,
improving UI iteration speed and codebase maintainability.
• Implemented robust persistence layer architecture using Core Data (handling background/nested contexts) and SwiftData for
seamless offline data synchronization.
• Engineered networking layers using URLSession and Codable for consuming REST APIs, ensuring safe asynchronous data handling
with async/await and Combine.
• Performed performance profiling and debugging using Xcode Instruments (Memory Graph, Leaks, Time Profiler) to fix bugs and
prevent memory leaks.
• Integrated StoreKit subscriptions, Firebase Analytics, AppsFlyer attribution, and Codemagic CI/CD pipelines for automated releases.
iOS Developer Nov 2023 – May 2025
NDA (Ukraine) | Tax-Service Mobile Product
• Core iOS Developer on a tax-service product delivering real-time tax records, subscription updates, and live data support.
• Built complex network communication modules using REST APIs, Codable, GraphQL, and WebRTC for live customer support chat.
• Designed and maintained persistent storage workflows combining Core Data, FileManager, and offline caching strategies.
• Covered business logic and data layers with automated unit tests to ensure high app stability and prevent regressions.
• Actively used Xcode debugging tools (LLDB, memory graph, conditional breakpoints) to investigate and resolve critical production
bugs.

PERSONAL PROJECTS
Tiny Reads (App Store) iOS App
• Engineered a mini-reader app featuring a swipeable card interface built with SwiftUI, Combine, and modern state management
(@Observable).
• Implemented offline-first data synchronization using Core Data for local caching and Firebase Firestore for remote content
synchronization.
• Built WidgetKit extensions sharing a unified data store via App Groups for seamless home screen widget updates.
DeliNote – Recipe Creator (App Store) iOS App
• Independent iOS app integrating AI API for automatic recipe generation and shopping list creation via camera recognition.
• Built completely with SwiftUI and Swift Concurrency, implementing CloudKit for multi-device data synchronization.

EDUCATION & LANGUAGES
Ternopil National Pedagogical University — Master & Bachelor of Information Technology (2019 – 2025)
Languages: English (B2 - Upper-Intermediate), Ukrainian (Native)