Denys

Denys Professional summary

Zaiakin
iOS Software Engineer with almost 4 years of expertise in iOS software
development, specialising in designing and developing iOS apps from the
scratch. This includes expertise in default iOS app UI/UX, networking, and CI/
CD functionality.

iOS Software Key Achievements:
1. Successfully integrated chat functionality into a project, with extending
Engineer 3rd-party frameworks to include text/photo/voice messages, polls, timers,
UI style change, and websockets. Achieved optimal performance with no
user complaints or crash reports on Crashlytics post-launch, after
Phone investing four months as the sole engineer on the project.
[open contact info](look above in the "contact info" section). Defined a project template, based on existing company projects,
significantly reducing the time required to kickstart new projects and
Email
saving weeks of engineers' time for subsequent project launches.
[open contact info](look above in the "contact info" section) 3. Thrived in contributing to multiple projects simultaneously, maintaining
high performance despite constant context switches.
LinkedIn
[open contact info](look above in the "contact info" section) I am a responsible specialist with a strong focus on product quality, ready to
denys-zaiakin/ deliver results. As a team player, I value a respectful, inspiring, and quality-
focused work environment.
Location
Kyiv, Ukraine
Employment history
Skills IOS DEVELOPER AT TRACKIMO,
Kyiv, Ukraine
Languages September 2020 - March 2024
Swift, Objective C, C/C++, C#,
HTML. • NickWatch
Development from scratch, release to the App Store, post-release
Technologies support.
Cocoa Touch, Core Animation, Technologies: UIKit, Autolayout, Core Location, MapKit, Push
Core Location, MapKit, Notifications, InApp Purchases, GCD, Keychain, AVFoundation,
Core Graphics, Core Motion, REST, Realm, CallKit, CI/CD, Sockets, Chatto, SwiftLint, Bluesnap.
UIKit, Core Data, GCD,
NSOperation, Push • TrackiPet & Trackimo+
Notifications, InApp Purchases, Development of new features and support.
Autolayout, AVFoundation, Technologies: UIKit, Autolayout, Core Location, MapKit, Push
SwiftUI, Unit testing, CallKit, Notifications, InApp Purchases, GCD, REST, Core Animation,
Keychain, SSL Pinning, Keychain, CI/CD, SwiftLint.
CryptoKit, Local Authentication.
INTERN AT RIGHT&ABOVE,
Third Party frameworks Kyiv, Ukraine.
CI, Fastlane, Bitrise, Firebase, March 2020 - May 2020
TestFlight, SwiftLint, Moya,
Alamofire, Realm, Chatto,
SwiftGen, Bluesnap Education
Networking BACHELOR DEGREE OF COMPUTER SCIENCE
Sockets, Restful API, Postman. National Aviation University
Kyiv, Ukraine
Other September 2016 - May 2021
Git, Figma, JIRA, Scrum/Agile,
Asana, Unity3d, Photoshop. MASTER DEGREE OF COMPUTER SCIENCE,
National Aviation University
Kyiv, Ukraine
Languages September 2021 - January 2022

English - Upper Intermediate PHD IN APPLIED MATHEMATICS,
Ukrainian - Native Lutsk National Technical University
Lutsk, Ukraine
February 2022 - Present