Олександр

OLEKSANDR ABAKUMOV Kyiv, Ukraine
[open contact info](look above in the "contact info" section)
iOS Tech Lead · in IT since 2007 · iOS since 2009 [open contact info](look above in the "contact info" section)

SUMMARY
iOS Tech Lead and Senior iOS Engineer with 15+ years of commercial iOS development experience, starting
with the first-generation iPhone and iOS 3 and continuing through the latest Apple platforms and technologies.
Extensive experience delivering and supporting large-scale mobile products, including GovTech applications
used by millions of daily active users and an iOS product for a leading US retailer generating ~$40M daily, 36%
of which flows through digital channels.
Strong expertise in Swift, Objective-C, Cocoa Touch, UIKit, SwiftUI, iOS Human Interface Guidelines, software
architecture, OOP, POP, and design patterns.
Experience leading iOS teams, mentoring engineers, defining architecture, reviewing shared codebases used
by more than 60 developers, and managing the complete feature delivery lifecycle, including requirements
analysis, technical estimation, implementation, testing, CI/CD, release management, production monitoring, and
support.
EDUCATION
2007 - 2010 Donetsk National University, Donetsk, Ukraine
Specialist Diploma in Applied Mathematics
2003 - 2007 Horlivka Technical College of Donetsk National University, Horlivka, Ukraine
Junior Specialist Diploma in Applied Mathematics - with honors

SKILLS
Languages Swift, Objective-C
Apple frameworks Cocoa Touch, SwiftUI, UIKit, Foundation, Combine, Swift Concurrency (async/await,
actors, Sendable)
Guidelines iOS Human Interface Guidelines
Architecture MVVM, Clean Architecture, Redux, SOLID, OOP, POP, design patterns
Data & networking REST, SSE, JSON, Keychain, Core Data, SQLite, Realm
Tooling Xcode, SPM, CocoaPods, Carthage, Fastlane, Git, App Store Connect, TestFlight
Testing XCTest, XCUITest, Swift Testing, Quick, Nimble

EXPERIENCE
iOS Tech Lead - Amedia (GovTech projects)
Jan 2026 - present
• Leading iOS development and making key technical and architectural decisions
• Developing new digital services for established, widely used government applications
• Contributing to the development of a new open-source project in the digital identity domain
• Conducting code reviews and maintaining engineering quality standards
• Mentoring team members and supporting technical knowledge sharing
• Managing releases and coordinating the complete feature delivery lifecycle
iOS Tech Lead - Natife (GovTech projects)
Jun 2024 - Jan 2026
• Led the iOS team throughout the complete product development lifecycle
• Co-designed and evolved a modular iOS architecture currently used across multiple large-scale, widely used
products (SPM packages, Git submodules, and testability-focused design)
• Conducted code reviews, design reviews, and technical meetings
• Collaborated with backend, UX, QA, and product teams on technical solutions and feature delivery
• Managed releases and maintained CI/CD processes
• Mentored engineers and supported the onboarding of new team members
Lead Software Engineer - Shupperz
Jan 2023 - Jan 2024
• iOS team lead
• Code reviews, design reviews, technical meetings
• Collaborated with the backend team on client-server architecture
• Release management
Senior Software Engineer - Nordstrom
Apr 2018 - Apr 2022
• Contributed to the mobile app driving part of Nordstrom's digital revenue — 36% of the retailer's ~$40M/day
• Developed and maintained 2 apps from one shared codebase (60+ devs)
• Collaborated with backend, UX and QA teams to define and design the app
• Analyzed and estimated effort of implementing business requirements
• Comprehensive code reviews across a large shared codebase (60+ devs)
• Ongoing knowledge transfer, mentorship and support of other team members
• Implemented analytics for user stories and technical events
• Full cycle of feature delivery (CI/CD, remote config, A/B tests)
• Agile / Scrum, unit and UI testing, load-test scripts
• On-call / pager duty, production support

EARLIER EXPERIENCE
Jun 2014 - Feb 2018 - Startup / outsourcing - iOS developer (Objective-C / Swift)
Jan 2013 - Apr 2014 - iOS developer, porting Web/Android apps to native iOS
Jul 2010 - Jan 2013 - Freelance.com - iOS developer (Objective-C)
Sep 2008 - May 2009 - Zveno - Web developer (PHP / JS / HTML / CSS)

TEACHING
Lecturer / mentor in iOS development - Swift, SwiftUI, architecture.

ACHIEVEMENTS
• Permanent mentor in the Women Who Code community
• 20+ self-developed iPhone/iPad apps - from sketch to App Store
• Worked directly with clients from New Zealand, Wales, Canada, Germany, USA, Israel
• Experience in low-level development (Assembler x86)
• Developed backend REST APIs and admin panels (Phalcon, CodeIgniter, Yii)

ADDITIONAL
Freelancer freelancer.com/u/iamgooddeveloper
Languages Ukrainian (native), English (upper-intermediate)
Hobbies Marathons, BMX, guitar