Сергій
IOS developer, 100 000 UAH
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Work experience
IOS developer
from 10.2022 to now
(3 years 6 months)
RoveTek UG (IT)
IOS developer
from 07.2021 to 09.2022
(1 year 3 months)
Evernetica, Запоріжжя (IT)
Designed and implemented new product features while optimising
performance of existing ones.
• Integrated Stripe payments, implementing secure in-app purchases,
subscription handling, and payment token validation.
• Collaborated in a team to develop real-time communication features,
including WebRTC live streaming, Twilio video/audio calls, and
WebSocket-based chat.
• Built complex UI components such as feeds, dynamic forms, and media
playback modules (Video & Audio).
• Improved crash monitoring and diagnostics using Crashlytics.
• Contributed to scalability and performance improvements across the app.
IOS developer
from 03.2016 to 07.2021
(5 years 5 months)
Lemeor, Запоріжжя (IT)
• Implemented advertising, In-App Purchases, WebSocket-based chat.
• Integrated backend services and analytics.
• Took ownership of technical decisions and delivery.
• Established development standards and made architectural decisions to
support rapid feature iteration.
• Designed application architecture and implemented core functionality
end-to-end.
• Implemented device synchronisation using CoreBluetooth and
WebSocket communication (Starscream).
• Built offline-capable persistence using Core Data and FileManager.
• Integrated payments via Stripe and StoreKit (In-App Purchases).
• Implemented audio playback and processing using AVFoundation.
• Owned complex cross-layer features involving hardware, networking, and
persistence, ensuring reliability in edge cases
Education
Zaporizhzhia Institute of Economics and Information Technologies
Computer Systems and Networks, Запоріжжя
Higher, from 2008 to 2013 (5 years)
Knowledge and skills
- Git
- Xcode
- UIKit
- SwiftUI
- MVVM
- Firebase
- REST API
- JSON
- Figma
- CocoaPods
- Core Data
- Auto Layout
- GCD
- Alamofire
- Objective-C
- SwiftU
- Clean Architecture
- Firestore
- Keychain
- Unit Testing
- Xcode Cloud
- Push Notifications
Language proficiencies
- Ukrainian — fluent
- English — above average
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