Олег

OLEH LIUKLIAN
iOS Developer
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Ivano-Frankivsk, Ukraine
LinkedIn | GitHub | Telegram

ABOUT ME
iOS developer (Swift) with 3+ years of experience building apps with UIKit and SwiftUI. I've worked on apps in
telehealth, sports, social networking, music streaming and photo editing: from building an app from scratch to
maintaining and migrating large legacy codebases. Comfortable with chat and video calls, subscriptions and
in-app purchases, REST API integration and App Store releases. I use Claude Code in my daily work for
refactoring and automated UI testing.

WORK EXPERIENCE
iOS Developer | NERDZ LAB
July 2025 – Present | Ukraine (Hybrid)
Outsourcing company. Several client projects in parallel, usually as the main iOS developer.

iOS Developer | Faifly
May 2025 – June 2025 | Ukraine (Remote)
Feature development in an existing iOS app on short deadlines.

iOS Developer | ManySpace
November 2024 – July 2025 | Ukraine (Remote)
iOS feature development and support together with the backend and design teams.

Volunteer iOS Developer | National Corpus of the Crimean Tatar Language
February 2025 – May 2025 | Human rights project
iOS app that helps preserve the Crimean Tatar language.

iOS Developer | Yostix (startup)
September 2024 – Present | Remote
Mood, well-being and sleep tracker with AI recommendations: custom charts, real-time chat, data caching.
Tech: SwiftUI, Combine, MVVM+C, XCoordinator, Alamofire, R.swift

iOS Developer | Legacy
July 2024 – September 2024 | Remote
Call recorder app, prepared for the App Store and released.

KEY PROJECTS
Areeka — telehealth platform (patient and therapist apps)
July 2026 – Present
App Store: patients App Store: therapists

Developed two production apps: chat, video sessions, bookings, payments and wallet.
Migrated the chat to CometChat UI Kit 5 and improved video calls, Arabic (RTL) support and dark mode.
Improved security and stability: fixed crashes, set up build configurations, linting and Fastlane builds.
Tech: Swift, UIKit, SwiftUI, Storyboards, CometChat, Whereby, WebRTC, Firebase (Realtime Database, Cloud Messaging,
Crashlytics, Remote Config, Dynamic Links), Push Notifications, AppsFlyer, Cloudflare Turnstile, Keychain, Dependency
Injection, CocoaPods, SPM, Fastlane, App Center, SwiftLint, Lefthook

Tekkers — football social app
October 2025 – Present
App Store

Migrated the whole app from UIKit to SwiftUI with Claude Code.
Built a Claude Code skill for automated visual testing: it compares every screen before and after the
migration and against Figma.
Video player on AVFoundation, video caching, pagination, sharing.
Tech: Swift, SwiftUI, UIKit, Combine, AVFoundation, Twilio Conversations, Google Maps SDK, Google Places, Firebase,
SnapKit, SwiftGen, SwiftLint, CocoaPods, XCTest, Claude Code

Sporting Allstars — social network for sports talents, clubs and agencies
January 2026 – July 2026
App Store

Built the app from scratch and released it to the App Store.
Reels-style video feed, stories, video recording, comments, profiles for talents, clubs and agencies.
Real-time chat with Twilio and payments with Stripe.
Unit tests for view models (about 220 tests).
Tech: Swift, SwiftUI, MVVM, Dependency Injection, async/await, Swift Concurrency, AVFoundation, AVKit, Twilio
Conversations, Stripe, Firebase, Google Sign-In, Alamofire, Nuke, BlurHash, XCTest, Sourcery, SwiftLint, SPM

Lumadive — underwater photo editor
November 2025 – March 2026
App Store

Built the app from scratch on my own and released it to the App Store.
Found a special underwater colour-correction algorithm and implemented it on Metal for fast photo
processing.
Photo editor with filters, crop and adjustments; subscriptions and analytics.
Tech: Swift, SwiftUI, MVVM+C, Metal, MetalPetal, Core Image, Adapty, In-App Purchases, Amplitude, Sentry, Singular,
Nuke, XCTest, SwiftGen, String Catalogs, SPM

Runners High — music streaming app
August 2025 – December 2025
App Store

Subscriptions, trials and promo codes; A/B testing with Remote Config.
Sharing to Instagram Stories and TikTok, deep links, local notifications.
Tech: Swift, UIKit, MVP, XIB, Firebase, RevenueCat, StoreKit, Branch.io, TikTok SDK, Facebook SDK, Lambda functions,
Nuke, SwiftGen, SwiftLint, CocoaPods, SPM

Chat and booking SDK for a large enterprise client (NDA)
July 2025 – Present
iOS SDK for partner apps: live chat with specialists and appointment booking.
Moved distribution from CocoaPods to SPM and shipped 40+ releases.
Tech: Swift, SwiftUI, MVVM+C, XMPP, BOSH, Objective-C, URLSession, SPM, CocoaPods

EDUCATION
Foxminded iOS Development Course | Aug 2024 – Nov 2024
Swift, UIKit and SwiftUI.
100 Days of SwiftUI / 100 Days of UIKit | Jun 2023 – Jan 2024
Self-study course on SwiftUI and UIKit.

College of Electronic Devices, Ivano-Frankivsk | Sep 2017 – Jun 2021
Electronics.

TECHNICAL SKILLS
Programming languages: Swift, Objective-C (basic)
UI: SwiftUI, UIKit, Storyboards, XIB, Auto Layout, SnapKit, custom UI components, animations, Dark Mode,
localization, RTL
Frameworks: Foundation, Combine, Swift Concurrency (async/await), GCD, AVFoundation, AVKit, Core Image,
Metal, CoreData, SwiftData, CoreLocation, Network, StoreKit, UserNotifications, PhotosUI
Networking & data: REST API, JSON, Codable, URLSession, Alamofire, WebSockets / real-time messaging,
Keychain, UserDefaults, caching
Chat, calls, payments: CometChat, Twilio, XMPP, Whereby, WebRTC, Stripe, RevenueCat, Adapty, In-App
Purchases, subscriptions
Services & analytics: Firebase (Analytics, Crashlytics, Cloud Messaging, Remote Config, Realtime Database,
Dynamic Links), Push Notifications (APNs), Amplitude, AppsFlyer, Branch.io, Sentry, Singular, social media SDKs
Libraries: Nuke, Kingfisher, XCoordinator, R.swift, SwiftGen, Lottie, SkeletonView, IQKeyboardManager
Architecture: MVVM, MVVM+C (Coordinator), MVP, MVC, TCA (basic), Dependency Injection, SOLID, OOP, Clean
Architecture
Testing & tools: XCTest, unit testing, Sourcery, SwiftLint, Lefthook, Fastlane, App Center, TestFlight, App Store
Connect, CocoaPods, SPM, Xcode, Git, GitHub, GitLab, Jira, Figma
AI tools: Claude Code, AI-assisted refactoring and code review
Languages: Ukrainian — native, English — B1 (Intermediate)