Олег

Oleg Loginov [відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація»)
Senior iOS Developer

Profile:
Senior iOS Developer with 9 years of experience in Swift and Objective-C, specializing in creating scalable,
high-performance applications with clean architecture and a strong user focus. Proven track record in
optimizing performance, refactoring legacy code, and delivering successful App Store releases. Solid
background in embedded development (C/C on Linux and FreeBSD, adding low-level optimization
expertise to mobile development.

Experience:
Senior iOS/macOS Developer, Mobisoft/Brainstack_; Kyiv, Ukraine – 2018 Present
- Mentored an interns in iOS development of new app features
- Established CI/CD pipelines for all applications and frameworks using Fastlane, GitHub Actions
- Created a background iOS service (similar to a Unix daemon) for data processing on jailbroken devices.
- Implemented Metal shaders, which improved video processing performance from 15 to 60 frames per
second
- Developed a commercial macOS application from scratch that decoded iOS backups

Senior iOS Developer, Trust Sourcing; Kyiv, Ukraine – 2016 2018
Released 5 projects in an outsourcing company, handled architecture decisions, developed features, ensured
code quality, mentored teammates, and managed App Store submissions.
- Implemented watchOS version of product
- Collaborated with product leadership and designers to rebuild app, transitioning from Objective-C to Swift,
integrated third-party SDKs including Firebase, Amplitude, Adjust
- Optimised Xcode project configuration and build settings, reducing build time by 20% and
improving team productivity

Middle iOS Developer, CHEESEBANANA; Kyiv, Ukraine – 2014 2016
Independently developed an app from scratch, defined architecture, built the network layer and UI, integrated
APIs, and handled testing and design.
- Refactored the source code according to the Objective-C style guidelines
- Implemented and integrated c-level library and reducing time for string parsing x10
- Developed and launched 4 commercial iOS applications, ensuring smooth user experience.
- Noticeably reduced the bug backlog

Middle iOS Developer, Applikey Solutions; Kyiv, Ukraine – 2013 2014
- Work on bug fixing and improving application performance
- Debugged and improved stability of 3 iOS apps, reaching crash-free rates of 99%

Junior iOS Developer, Sloboda Studio; Kyiv, Ukraine – 2012 2013
- Noticeably reduced the bug backlog
- Design and build applications for the iOS platform
- Collaborate with a team to define, design, and ship new features

Education:
Master's Degree in Computer Systems, SevNTU, Ukraine

Skills:
Swift • Objective-C SwiftUI UIKit • GCD Async/Await • Combine • AVKit • AVFoundation • CoreAnimation
• Metal • CoreData • StoreKit • CoreLocation • Game Center • Jailbreak • Firebase • Unit testing • Fastlane •
Github Actions
-
•
+
+
•
•
+
+
)
–
–
—
—
–