Oleksandr

OLEKSANDR HRYHORCHUK
iOS Engineer
[open contact info](look above in the "contact info" section)
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Dnipro
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PROFILE ACHIEVEMENTS

Senior iOS Engineer with 7 years of Rebuilt a video messaging app in SwiftUI in 3 months, improving
experience building high- maintainability and UI responsiveness at Genesis.
performance apps across fintech, Led a 3-person dev team at UTI, successfully launching VPN-based telecom
logistics, messaging, and B2C apps with App Store delivery.
domains. Skilled in Swift, SwiftUI, Migrated legacy Objective-C code to Swift in major commercial apps like Allo
and legacy Objective-C, with a and DPD, increasing stability and performance.
strong focus on architecture, clean Integrated advanced biometric scanning and Apple Wallet functionality at A-
code, and user experience. Bank, streamlining KYC and insurance-sharing features.
Experienced in full development Built and launched multiple client apps end-to-end at Yalantis, managing
cycles—from idea to launch and both development and stakeholder communication.
optimization. Designed a photo-to-sticker social utility app as a freelancer, delivering a
lightweight and share-ready UX for iOS platforms.

CORE COMPETENCIES
EMPLOYMENT
Languages & UI:
Swift, Objective-C, SwiftUI, UIKit iOS Engineer Apr 2025 - Present
New Lion Studio (Freelance)
Architecture & Frameworks: Developed a photo-to-sticker utility app with seamless messenger integration
Combine, RxSwift, Swinject, (Telegram, WhatsApp, iMessage).
Firebase, Realm, CoreData Designed intuitive UI, image processing pipeline, and social sharing flow.

Features:
VOIP, Push Notifications, In-App iOS Engineer Jan 2023 - Mar 2025
Purchases, Apple Wallet A-Bank
Built card number scanner and advanced biometric validation (face frame, motion,
Networking & APIs: smile tracking).
Alamofire, Starscream (sockets), Integrated Apple Wallet for insurance sharing.
Codable, RESTful APIs Optimized onboarding flow for speed and security.

Development Tools:
GitLab, Jenkins, App Store Connect, iOS Engineer Oct 2020 - Dec 2022
CI/CD Genesis
Rewrote messaging app from UIKit to SwiftUI in collaboration with lead engineer.
Team Collaboration: Delivered full app revamp within 3 months, modernizing design and performance.
Agile/Scrum, stakeholder
engagement, peer mentorship
iOS Engineer Jul 2018 - Sep 2020
Yalantis
EDUCATION Developed multiple client-facing apps from scratch to App Store release.
Participated in direct communication with international stakeholders.
Master's Degree in Biotechnology Delivered solutions across diverse industries including healthcare and logistics.
Dnipropetrovsk National Agrarian
University
2010 - 2016
COURSES
Master’s in Management of
Organizations iOS Development Certification Apr 2016
Dnipropetrovsk National Agrarian
University
2014 - 2017