Oleh

OLEH PSIAROVSKYI
iOS Engineer | Swift • SwiftUI • UIKit

Kropyvnytskyi, Ukraine • [відкрити контакти](див. вище в блоці «контактна інформація») • [відкрити контакти](див. вище в блоці «контактна інформація») • LinkedIn

PROFILE
iOS engineer with 6+ years of experience building, modernizing, and shipping mobile products. Strong across Swift, SwiftUI,
UIKit, application architecture, networking, persistence, subscriptions, real-time communication, and Apple platform integrations.
Combines commercial delivery at EPAM, Inoxoft, Tab Apps, and MIF Projects with freelance ownership and an independent
portfolio of three apps released on the App Store.

SELECTED IMPACT
• Shipped and continue to iterate on three independent App Store products, taking features from product idea through
implementation, monetization, release, and post-launch improvements.
• Built reliable networking layers with URLSession, Codable, Combine, Alamofire, REST APIs, request/response handling,
caching, and clear error states.
• Designed maintainable applications with MVVM, Coordinator, dependency injection, modular boundaries, CoreData/Realm
persistence, and testable services.
• Improved production readiness through unit testing, SwiftLint, Crashlytics, code review, CI/CD, subscriptions, push
notifications, and release support.

CORE EXPERTISE
iOS: Swift, SwiftUI, UIKit, Combine, concurrency, CoreData, Realm
Networking: URLSession, REST APIs, Codable, Alamofire, Ktor, caching, error handling
Architecture: MVVM, Coordinator, dependency injection, modular design, Service Locator
Delivery: App Store releases, subscriptions, Firebase, Crashlytics, CI/CD, unit testing, code review

PROFESSIONAL EXPERIENCE

Independent iOS Engineer | Freelance & Product Development
Ukraine / Remote • Jan 2026 – Present
• Build and iterate on independent mobile products; the portfolio includes three apps currently released on the App Store.
• Deliver freelance iOS work across SwiftUI and UIKit, including feature development, API integration, local persistence,
monetization, and release readiness.
iOS Developer | Inoxoft
Remote • Aug 2025 – Jan 2026
• Delivered production iOS functionality in a client-focused environment using Swift, UIKit/SwiftUI, networking, persistence,
and maintainable architecture patterns.
iOS Developer | EPAM
Remote • Oct 2024 – May 2025
• Contributed to commercial iOS development with an emphasis on reliable feature delivery, code quality, and collaboration
within an engineering team.
iOS Developer | Tab Apps
Remote • Jun 2023 – Sep 2024
• Built and evolved consumer iOS features spanning SwiftUI/UIKit interfaces, Firebase services, subscriptions, media, local
storage, and real-time functionality.
Mobile Developer | MIF Projects
Remote • Apr 2021 – Jul 2023
• Developed mobile features across iOS and Android using Swift and Kotlin; contributed to e-commerce flows, bug fixing,
testing, and code reviews.

Oleh Psiarovskyi • iOS Engineer • 1
SELECTED PRODUCTS & PROJECTS

Independent App Portfolio 3 APPS LIVE
Swift • SwiftUI • UIKit • URLSession • Combine • Firebase • RevenueCat/AppHud
• Released three independent products on the App Store. Owned product implementation from API integration and local
persistence through subscriptions, release preparation, and post-launch improvements.
Team Communication App (NDA)
Swift • SwiftUI/UIKit • MVVM + Coordinator • URLSession • Firebase • CoreData
• Built messaging flows with push notifications and offline storage; combined API integration, local persistence, and service-
based dependency management in a maintainable application structure.
Engineering & Bluetooth App (NDA)
Swift • UIKit • Combine • CoreBluetooth • CoreData • Swinject • Coordinator • SnapKit
• Implemented Bluetooth communication, offline data handling, dynamic navigation, and networking improvements in a
modular UIKit application.
Kotlin Multiplatform MVP (NDA)
Kotlin • KMM • MOKO-MVVM • Ktor • Kodein • Realm • Jetpack Compose • SwiftUI
• Created an Android MVP around shared multiplatform logic with authentication, networking, dependency injection, and
offline storage.
Sport Statistics App
Swift • UIKit • MVVM + Coordinator • Realm • Firebase • Combine • Charts
• Created a volleyball-statistics product with offline-first storage, team synchronization, visual analytics, and notifications;
also guided an intern contributing to implementation.
E-commerce Mobile Platform
Swift • SwiftUI/UIKit • Kotlin • Firebase • CoreData • Unit Testing
• Developed product browsing, cart, and checkout modules for the US market; added unit tests and helped establish a
disciplined code-review process around a scalable modular architecture.

EARLIER EXPERIENCE
iOS Developer, Freelance • Jan 2021 – Apr 2021
Programming Instructor • IT Step Academy, IT Future, RoboCode • Oct 2019 – Aug 2021
iOS Developer, 256Devs • Jun 2019 – Jan 2020

EDUCATION
Computer Engineering • Central Ukrainian National Technical University • 2022–2024
PhD Studies, Management • Central Ukrainian National Technical University • 2016–2020
Degree in Human Resource Management • Kirovohrad National Technical University • 2010–2016

LANGUAGES
Ukrainian — Native • English — Working proficiency

Oleh Psiarovskyi • iOS Engineer • 2