Oleh

Personal Information
Name and Surname: Oleh Psiarovskyi
Address: Ukraine
Kropyvnytskyi
Date of Birth: 28.01.1993

Phone number: [відкрити контакти](див. вище в блоці «контактна інформація»)

E-mail: [відкрити контакти](див. вище в блоці «контактна інформація»)
Linkedin: http://[відкрити контакти](див. вище в блоці «контактна інформація»)

iOS Software Engineer

Education
2010 - 2016 Kirovohrad National Technical University
"Human Resource Management"

2016 - 2020 Central Ukrainian National Technical University
PhD Student "Management"

08.2022 - 01.2024 Central Ukrainian National Technical University
"Computer Engineering"

Experience
01.2019 - 03.2019 CUNTU
Junior Research Fellow

06.2019 - 01.2020 256Devs
iOS Developer

10.2019 - 07.2020 RoboCode
Senior Teacher
04.2020 - 09.2020 IT Future
Programming Teacher

08.2020 - 08.2021 IT Step Academy
Programming teacher

01.2021 - 04.2021 Freelancer
IOS Developer

04.2021 - 07.2023 MIF Projects
Mobile Developer
06.2023 - 09.2024 Tab Apps
IOS Developer
10.2024 - 05.2025 EPAM
IOS Developer
05.2025 - 08.2025 Freelance
iOS Developer
08.2025 - 01.2026 Inoxoft
iOS developer

Software skills Languages
Swift Ukrainian
Kotlin English
C#/C++/Python/Java
Projects
CryptoCoins Forecast (Swift, Charts, MVVM, Combine, URLSession, UIKit, SwiftLint)
Redesigned an existing cryptocurrency app, fixing UI issues, enhancing user experience, and improving data handling. Used
Charts for visualizing trends, Combine for reactive programming, URLSession for API requests, and SwiftLint for code quality.
Сервис24 (Swift, Alamofire, MVVM, UIKit, Firebase Crashlytics, Codable, Kingfisher)
Developed two separate apps: one for clients and another for business owners. Fixed API request/response issues,
expanded data models, improved UI, and integrated Crashlytics for error tracking. Used Alamofire for networking and
Kingfisher for image caching.
Weather Apps (Swift, Kotlin, KMM, CoreData, URLSession, Retrofit, Jetpack Compose, Firebase, SwiftUI, Swinject)
Created three weather apps (iOS, Android, Multiplatform).
Used CoreData for caching, URLSession and Retrofit for networking, Firebase for real-time weather updates, and Jetpack
Compose/SwiftUI for UI. Integrated Swinject for dependency injection.
MagicBall App (Swift, UIKit, MVVM, Core Motion, AVFoundation, Lottie Animations)
A simple shake-to-predict app using Core Motion for accelerometer data. Implemented MVVM architecture, custom
animations with Lottie, and sound effects with AVFoundation. Not published.
First App (NDA - Meditation App) (Swift, UIKit, MVVM, AVAudioPlayer, Timer, Background Modes, Firebase)
Developed UI for meditation screens, added audio controls using AVAudioPlayer, implemented a session timer, and
optimized background playback with Background Modes.
Second App (NDA - Relationship Insights) (Swift, UIKit, MVVM, Contacts Framework, CoreData, Firebase, Local
Notifications)
Managed user relationships via Contacts Framework, stored insights in CoreData, implemented Local Notifications, and
synchronized data using Firebase.
Third App (NDA - Thermometer App) (Swift, UIKit, MVVM, Firebase, AdMob, Bitrise CI/CD, RevenueCat, Network
Framework, Combine, CoreBluetooth)
Developed an app for tracking temperature using external sensors via CoreBluetooth. Integrated Firebase for data storage,
AdMob for ads, and RevenueCat for subscription management. Automated deployment with Bitrise.
Fourth App (NDA - KMM Multiplatform App) (Kotlin, KMM, MOKO-MVVM, Ktor, Kodein DI, Jetpack Compose, SwiftUI,
Firebase, Realm, Google Auth)
Created an Android MVP using KMM with shared logic. Used MOKO-MVVM, Ktor for networking, Kodein DI, Realm for offline
storage, and Google Auth for authentication.
E-Commerce Store
Technologies: Swift, Kotlin, Firebase, Code Review
Worked on an e-commerce application for iOS and Android, adding new features, fixing bugs, and participating in code reviews.
Fifth App (NDA - Engineering & Bluetooth App) (Swift, UIKit, MVVM, Combine, Bluetooth Framework, Network
Framework, Swinject, Coordinator, CoreData, URLSession, SwiftLint, SnapKit, Kingfisher)
Worked with Bluetooth communication, fixed UI bugs, added a dynamic navigation bar, integrated CoreData for offline data,
and optimized URLSession requests. Used Swinject for dependency injection and SnapKit for UI layout.
Sixth App (NDA - Team Communication App) (Swift, UIKit, SwiftUI, MVVM+Coordinator, Firebase, CoreData,
URLSession, Service Locator, Push Notifications, WebSockets, AppHud, Lottie Animations)
Built a team communication app with real-time chat using WebSockets, Firebase messaging, and push notifications.
Implemented offline message storage with CoreData and used Service Locator for dependency management.
Seventh App (NDA - Chat with Virtual Person) (Swift, SwiftUI, MVVM, Realm, AppHud, Firebase, Lottie Animations,
URLSession, Combine, RevenueCat, AVFoundation)
Developed a chatbot app with AI-driven conversations. Used Realm for local data storage, Firebase for real-time data sync,
AppHud and RevenueCat for subscriptions, AVFoundation for speech synthesis, and Lottie for animations. Published on
App Store.
Eighth App (NDA - Face Swap & AI Image Generator) (Swift, SwiftUI, MVVM, CoreData, URLSession, Combine,
Firebase, AppHud, Lottie Animations, AVFoundation, MLKit, Vision Framework)
Built a face swap and AI-generated image app, using MLKit for face detection, Vision Framework for processing, and
CoreData for local storage. Managed subscriptions with AppHud and Firebase. Published on App Store.
Sport Statistic App (Swift, UIKit, MVVM+Coordinator, SnapKit, Realm, Firebase, Combine, Charts, URLSession, Local
Notifications, Push Notifications)
A personal project for tracking volleyball statistics. Used Realm for offline data, Firebase for team sync, Charts for
visualizations, and Local/Push Notifications for updates. Leading an intern for code implementation.
E-Commerce Store
Technologies: Swift, SwiftUI, UIKit, Firebase, CoreData, Unit Testing, Code Review
Developed an e-commerce app for the US market, supporting various modules like product browsing, shopping cart
management, and checkout. Built Unit Tests to ensure code quality. Used UIKit and SwiftUI for designing a modern, intuitive
user interface. Established a strict Code Review process for the team, ensuring best practices. The app includes advanced
state management and supports a highly scalable, modular architecture for future enhancements.