Yehor H. iOS Developer

Work Experience

iOS Developer, Social & Security App

Duration: Dec 2023 – Jul 2024
Summary: The NEO messenger application focuses on a high level of security with two layers of encryption and PIN code account access, accompanied by flexible data storage settings.
Responsibilities: Led the successful implementation and overhaul of project architecture, enhanced efficiency and scalability, conducted a thorough analysis of MatrixSDK, and executed feature development, code optimization, and bug fixing.
Technologies: Swift, Matrix SDK, Firebase, KeychainSwift, UIKit, CoreData, SnapKit, SwiftLint, URLSession, async/await

iOS Developer, VPN & Network Security

Duration: Aug 2023 – Dec 2023
Summary: This project involves the development of a highly secure VPN client application designed for both individual and enterprise users. The application leverages the Packet Tunnel Provider to intercept and secure network traffic, ensuring end-to-end encryption. It also utilizes NWProtocolWebSocket for maintaining real-time communication between the client and the server, providing a seamless and secure user experience.
Responsibilities: Developed and integrated the VPN client, architected application scalability, implemented user authentication and data encryption, and conducted application testing and debugging.
Technologies: Swift, Packet Tunnel Provider, NWProtocolWebSocket, Network Extension, UIKit, URLSession, Keychain, SwiftLint, async/await

iOS Developer, English App

Duration: Mar 2023 – Jul 2023
Summary: An app designed to assess English proficiency, featuring a diverse task 'bank' and reporting capabilities, with a scalable and easily updatable test database.
Responsibilities: Spearheaded full-cycle mobile app development, refactoring for performance and scalability, and implemented AppStore deployment.
Technologies: Swift, SwiftUI, MVVM, Combine, FirebaseAPI

iOS Developer, Healthcare

Duration: Nov 2022 – Feb 2023
Summary: A medical app providing appointment scheduling, medication tracking, mental health resources, and mental exercise games.
Responsibilities: Implemented UIs, developed a robust Network Layer, and participated in full-spectrum development from feature implementation to bug fixing.
Technologies: Swift, UIKit, SpriteKit, Networking, AVFoundation, Multithreading, Core Animation, MVP, CocoaPods, Autolayouts, Storyboard, GCD, URLSessions, UserDefaults, CoreImage, Apollo, Twilio

iOS Developer, Food & Delivery

Duration: Jun 2021 – Oct 2022
Summary: A platform for online purchase and delivery from local alcohol markets, with user personal accounts, product reviews, and favorites list.
Responsibilities: Crafted Swift codebase, led project refactoring for maintainability, implemented features and navigation logic, and worked with network integration.
Technologies: Swift, UIKit, Moya, Realm, MVP+Router+Adapter, UserDefaults, CocoaPods, SourceTree, Express, MongoDB, Cypress

iOS Developer, Social Application 

Duration: Jan 2021 – May 2021
Summary: Internal iOS SDK development including chat and video call functionality, with a demo application showcasing these capabilities.
Responsibilities: Established application and SDK architecture, implemented chat and WebRTC features, and refined UI and bug fixes.
Technologies: Swift, Firebase SDK, WebRTC, UIKit, MessageKit, CallKit

iOS Developer, E-commerce

Duration: May 2020 – Dec 2020
Summary: An app for managing group events and expenses, allowing members to track spending and settle financial contributions efficiently.
Responsibilities: Established application architecture, developed navigation logic and bespoke animations, and integrated network communication.
Technologies: Swift, Core Animation, BaaS, Core Data, Networking, MVC, UIKit, Multithreading

iOS Developer, E-commerce

Duration: Jan 2020 – Apr 2020
Summary: An application for purchasing and managing tickets and vouchers for events and retail discounts, including a map feature and QR code scanning.
Responsibilities: Led UI implementation, optimized Swift codebase, and managed App Store delivery and feature implementation.
Technologies: Swift, UIKit, MapKit, AVFoundation, Core Graphics, Core Animation, Jira, SourceTree

iOS Developer, Music Player

Duration: Sep 2019 – Dec 2019
Summary: An iOS music player built on AudioKit with a focus on speed, lightness, and design, featuring a visual equalizer and user-friendly API.
Responsibilities: Developed a music player application, focusing on a simple and intuitive design with a two-channel visual equalizer.
Technologies: Swift, AudioKit, AVKit, MediaPlayer

iOS Developer, Under NDA

Duration: Apr 2019 – Aug 2019
Summary: An ePOS system for airline crews to manage in-flight sales with offline capabilities and server communication for post-flight data processing.
Responsibilities: Coded efficiently in Swift, led project refactoring for performance optimization and managed app deployment and feature implementation.
Technologies: Swift, UIKit, MVP, URLSession, UserDefaults, CocoaPods, SourceTree, GitLab, PromiseKit

Education

• V. N. Karazin Kharkiv National University
  Master’s degree in System Engineering and Computer Science