Андрій

Andrii Petrovskyi

Senior iOS / macOS / tvOS Developer

● Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
● Phone: [відкрити контакти](див. вище в блоці «контактна інформація») (Romania), [відкрити контакти](див. вище в блоці «контактна інформація») (Ukraine)
● LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)
● Location: Romania - Bucharest (Open to Remote across EU timezones /
Relocation)

Senior iOS / macOS Developer specializing in Swift and SwiftUI, with extensive
experience building and maintaining applications across iOS, macOS, and tvOS.
Strong background in application architecture, reusable components, shared
modules, and integrating REST APIs and backend microservices.

Experienced in modernizing legacy codebases, improving code quality, implementing
complex asynchronous workflows, and developing features from technical design to
release.

TECHNICAL SKILLS

● Core Languages: Swift (10+ years), Objective-C (4 years).
● Modern Frameworks: SwiftUI (Expert, 3+ years), UIKit, tvOS SDK, macOS
SDK (AppKit/Bindings).
● Concurrency & Performance: Swift 6 Strict Concurrency (Actors,
Async/Await, Tasks), GCD (Grand Central Dispatch), OperationQueue,
Instruments (Leaks, Time Profiler, Energy Logging).
● Architecture & Methodology: MVVM, MVC, Protocol-Oriented
Programming, Dependency Injection.
● Data, Network & Security: Apollo GraphQL, REST APIs, URLSession,
Socket.IO, Core Data, Realm (Reactive Notifications), Apple Keychain, secure
data persistence.
● Accessibility: VoiceOver, accessibility labels and traits, focus management in
tvOS.
● Tooling & CI/CD: Swift Package Manager (SPM), CocoaPods, Fastlane,
Git/GitFlow, SwiftLint, Firebase Crashlytics, Sentry.

PROFESSIONAL EXPERIENCE

Project: EGWritings for tvOS (Digital Library Platform)

Position: Senior iOS / tvOS Developer | 2025 – 2026

● Autonomous tvOS Architecture: Independently researched and developed
an interactive digital library and book reader from scratch for Apple TV using
SwiftUI and custom text layout logic with CoreText.
● Audio/Text Synchronization: Implemented synchronization between book
text and audiobook playback, including automatic progress tracking, text
scrolling, and saving and restoring reading and playback positions.
● Networking & Data Loading: Implemented data loading and navigation
using Apollo GraphQL, handling content retrieval and navigation between
books and chapters.
● Accessibility: Implemented VoiceOver support, accessibility labels and traits,
and focus management for navigation between views and tabs on tvOS.

Project: Arise: AI Food Calorie Counter (Health & Fitness App)

Position: Senior iOS Developer | 2024 – 2025

● AI Feature Engineering: Implemented on-device image validation using
Apple Vision Framework and integrated image uploads with a backend
service that uses Gemini to analyze food and return ingredients, calories, and
macronutrients
● UI Modernization: Migrated legacy UIKit screens to SwiftUI, including the
Welcome Dashboard, Rewards, and Achievements screens.
● Data Persistence & Clean Code: Worked on local data storage and nutrition
logging using Realm, supporting offline functionality. Added and customized
SwiftLint rules to maintain consistent code quality across the project.
● Monetization & A/B Testing: Developed nutrition dashboard features,
integrated A/B testing events and screen variations, and implemented custom
paywall interfaces.

Project: EGW Writings 2 (Multi-Platform Resource)

Position: Senior iOS / macOS Developer (Sole Mobile Infrastructure Lead) | 2017 –
2024

● iOS & macOS Development: Developed and maintained the application for
iOS and macOS over five years, supporting a user base of 40,000+ and
maintaining a 4.7 App Store rating.
● Background Processing: Refactored book downloading and offline indexing
workflows using NSOperation and custom operation queues to handle
background tasks and bulk downloads without blocking the UI.
● Data Synchronization: Worked on synchronization of reading history, audio
progress, and bookmarks between local storage and EGW Cloud. Used
Realm Notifications to observe local data changes and trigger
synchronization.
● Networking: Migrated the networking layer from Objective-C to Swift.
Implemented token refresh handling and error handling for unreliable network
connections.

Project: Mimu (Restaurant Ordering & Order Management Platform)

Position: iOS Developer | 2020

● Product Development: Developed and implemented new iOS features for a
restaurant-focused startup, building customer ordering experiences and
supporting staff order management workflows.
● Reactive Programming: Used Swift and RxSwift within an MVVM
architecture to implement application functionality and work with reactive data
flows.
● Product Delivery: Contributed to preparing the application for release and
successfully shipping the product.

Tools & Technologies: Swift, RxSwift, Moyo, MVVM.

EDUCATION

● Programmer Specialist | Classic Private University (2004 – 2007)
● Junior Programmer | Zaporizhzhia Electrotechnical Professional College
(2000 – 2004)

LANGUAGES

● English: Intermediate+ (Effective professional working proficiency)
● Ukrainian / Russian: Native