Олександр

OLEKSANDR SYTNIK
SENIOR iOS DEVELOPER
Zaporizhzhia, Ukraine [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) Ukrainian / Russian — Native English — B2

PROFILE

Senior iOS Developer with 9+ years of experience building and architecting production mobile applications, including large-
scale fintech (Privat24), healthtech, and social/streaming products. Deep, hands-on expertise across Swift, SwiftUI, UIKit,
MVVM, VIPER, Swift Concurrency (async/await), and modern reactive stacks (Combine, RxSwift), with a strong track
record of owning architecture decisions, leading feature redesigns, and mentoring within cross-functional teams.
Comfortable working independently or embedded in a team, adapting quickly to changing requirements, and taking full
ownership of a module from architecture through to release. Currently looking for a role — full-time or contract — to apply
this experience to reliable, high-quality iOS products.

CORE SKILLS

Languages & UI
Swift • Objective-C • SwiftUI • UIKit • CoreAnimation
Architecture & Concurrency
MVVM • VIPER • MVP + Coordinator • Combine • RxSwift • Swift Concurrency (async/await, Actors) • Swinject •
PromiseKit
Data & Networking
CoreData • Realm • REST APIs • Alamofire • AFNetworking • SocketIO
Platform & Integrations
Firebase SDK • Facebook SDK • MapBox • MapKit • Google Maps • CoreML • Vision • ARKit • Swift Package
Manager • Push Notifications • Tuist
Testing & Tooling
Xcode • TestFlight • App Store Connect • CocoaPods • XCTest • Fastlane / CI-CD basics • Accessibility (VoiceOver,
Dynamic Type)

EMPLOYMENT HISTORY

Senior iOS Developer · Weave Jun 2024 — Present
— Own architecture and new feature development on the MIA project, built on an MVVM architecture.
— Led a major redesign and built most of the in-app map functionality.
Tech: SwiftUI, Combine, MVVM, MapBox, Firebase Analytics, Firebase Configuration, Tuist

Senior iOS Developer · Privat Bank 2022 — 2024
— Developed and shipped new features for Privat24 — Ukraine's largest banking app, serving millions of active users —
including a UI redesign and new architectural solutions to support the app's scale.
— Designed and implemented app architecture using VIPER and MVP + Coordinator patterns across different modules.
— Worked within a 60+ engineer product organization (6 iOS, 6 Android, 50+ backend/frontend engineers), collaborating
cross-functionally on release planning and architecture decisions.

Tech: Swift, SwiftUI, Combine, VIPER, MVP + Coordinator, CoreData, Alamofire, KeychainAccess, SnapKit, Firebase/Analytics, Crashlytics,
DynamicLinks

Senior iOS Developer · Olinqua Feb 2020 — Feb 2022
— Designed a VIPER-based architecture and led development of the Meddy healthtech application.
— Built a multifunctional chat with interactive report generation and secure medical-record storage.
Tech: Swift, VIPER, CoreImage, RxSwift, Realm, Alamofire, KeychainAccess, SnapKit, Firebase/Analytics, Crashlytics, DynamicLinks

Middle iOS Developer · Natife May 2018 — Feb 2020
— Outsource company; contributed to multiple client projects — HowDoo, Bookwa, and Wilmaa.
— HowDoo — social network with integrated uDoo cryptocurrency: built core architecture, networking layer, and
audio/video calling.
— Bookwa — social network for literature lovers: built app architecture and most core modules.
— Wilmaa — Apple TV streaming platform, developed solo end-to-end.
Tech: Swift, RxSwift, CoreData, Realm, SocketIO, Alamofire, KeychainAccess, SnapKit, Firebase/Analytics, FacebookSDK, Crashlytics,
PromiseKit, Swinject

Middle iOS Developer · Fanhub Media May 2017 — May 2018
— Contributed to three major fantasy-sports products with large UK/Australian user bases: Dream Team Fantasy Football,
NRL Fantasy, AFL Fantasy.
Tech: Objective-C, Swift, RxSwift, Realm, CoreData, AFNetworking, Alamofire, KeychainAccess, Firebase/Analytics, FacebookSDK,
PromiseKit, Swinject, Generamba

Junior iOS Developer · InCode Sep 2016 — May 2017
— MSD Helper — diabetes companion app: diabetic-friendly recipes, medication/appointment reminders, health surveys,
exercise routines.
— Dating — location-based dating app in the style of early Tinder, with social-login and map-based discovery.
Tech: Swift, Objective-C, CoreData, Alamofire, KeychainAccess, Firebase/Analytics, FacebookSDK, Twitter SDK, Instagram SDK, Google
Maps, Google Places

Junior iOS Developer · ProCreations Development Group Oct 2015 — Sep 2016
— First professional iOS role: built core UIKit screens, CoreData-backed persistence, and third-party SDK integrations
under senior guidance — foundational experience carried directly into the following role at InCode.
Tech: Swift, Objective-C, CoreData, Alamofire, Firebase/Analytics

EDUCATION

M.Sc. Software Engineering
Zaporizhzhya National Technical University

B.Sc. System Software
Zaporizhzhya National Technical University