Alex Siarheyeu
iOS Developer
5+ years exp
Swift
Objective-C
Active 9 days ago
+48 (571) 024017 Invite to interview
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Overview
Technical skills
Timeline
Roles
Overview
iOS engineer (early career) with a strong focus on algorithmic problem solving in Swift. This strength is proven by many concise Swift solutions such as the time-based key-value store implementation in Data Structures & Algorithms/time-based-key-value-store/submission-6.swift. There is no evidence of app-level work such as UI, lifecycle handling, background tasks, offline sync, or release/CI pipelines in the public human-authored code.
Technical skills
Swift• Middle • 5y+
Objective-C• Junior
Swift
Carthage
RxSwift
SwiftyJSON
Alamofire• 4y+
Moya• 4y+
SnapKit• 4y+
Kotlin
Kotlin Coroutines
Koin• 4y+
Mobile
CocoaPods
Crashlytics
Deep Linking
GCD
MVC
MVP
MVVM
Realm
RevenueCat
iOS
MapKit• 5y+
UIKit• 5y+
VIPER• 5y+
Combine• 4y+
Firebase• 4y+
SwiftUI• 4y+
AppsFlyer SDK
AVFoundation
Fastlane
SPM
StoreKit
Design
Figma
DevOps
CI/CD
Git
GitHub Actions
WebSockets
AI/ML
Cursor
LoRA
PEFT
Claude Code
QA
Postman
Databases
Firestore• 4y+
Frontend
GraphQL• 4y+
Timeline
iOS Engineer
•
Middle
GenAI Apps
•
Full-Time
Built leading mobile apps in the photo and video domain focused on AI-driven avatar creation, dynamic filters, and generative video. Integrated third-party AI generation services and shipped frequent App Store releases with continuous delivery ownership. Introduced a reusable design system, modularized the app into SPM-based features, and delivered end-to-end functionality such as real-time voice calls with PiP and a custom memory-efficient video feed.
Swift
SwiftUI
UIKit
Combine
SPM
WebSockets
AVFoundation
StoreKit
Amplitude
AppsFlyer SDK
GitHub Actions
Fastlane
iOS Software Engineer
•
Middle
Itexus
•
Full-Time
Worked on outsourced iOS applications across education, finance, and social-media domains. Designed and built reusable UI components and standalone modules to reduce duplication and speed up delivery. Developed apps from scratch and owned the full flow from architecture and implementation through App Store release.
iOS Engineer
•
Middle
Itexus
•
Full-Time
Developed an internal booking app for employees to reserve hotels, flights, and car rentals based on user preferences. Implemented shared business logic in Kotlin Multiplatform using dependency injection and bridged Kotlin coroutines/flows into Swift via Combine. Built feature screens from Figma with pixel-level accuracy, wrote performance tests, and reviewed pull requests to maintain consistent quality.
Kotlin
Koin
SwiftUIsince 2022
Combinesince 2022
GraphQL
Firebase
Firestore
Alamofire
Moya
MapKit
SnapKit
iOS Developer
•
Middle
Qulix Systems
•
Full-Time
Worked on an iOS learner-driver application to help users practice theory and practical test preparation. Built and maintained the app from scratch, including an in-app navigator to track progress while following test routes. Delivered a user-friendly practice and assessment experience using the stated iOS architecture and mapping integrations.
Swiftsince 2021
UIKitsince 2021
MapKitsince 2021
VIPER
Junior Mobile Developer
Confidence: Low iOS Engineer
iOS engineer (early career) with a strong focus on algorithmic problem solving in Swift. This strength is proven by many concise Swift solutions such as the time-based key-value store implementation in Data Structures & Algorithms/time-based-key-value-store/submission-6.swift. There is no evidence of app-level work such as UI, lifecycle handling, background tasks, offline sync, or release/CI pipelines in the public human-authored code.
Platform Native Mastery
Knowing the mobile platform
Not evidenced in public code
Mobile UI/UX & Responsiveness
Smooth mobile experience
Not evidenced in public code
Performance & Battery
Speed and battery use
Not evidenced in public code
Offline & Data Sync
Working offline and syncing
Not evidenced in public code
Device Integration
Using device features
Not evidenced in public code
Release & App Lifecycle
Building and publishing apps
Not evidenced in public code
Verified artifacts
Expertise
iOS• Junior
Technologies
iOS
Swift• Middle • 5y+
UIKit• 5y+
SwiftUI• 4y+
RxSwift
Combine• 4y+
SnapKit• 4y+
MVVM
Figma
SPM
Realm
GCD
Kotlin Coroutines
Firebase• 4y+
Alamofire• 4y+
CocoaPods
MapKit• 5y+
VIPER• 5y+
Fastlane
Koin• 4y+
Moya• 4y+
Carthage
SwiftyJSON
RevenueCat
AppsFlyer SDK
StoreKit
MVC
MVP
Deep Linking
AVFoundation
Crashlytics
Recommendations
- Use for algorithm-heavy components, core logic, or data-structure implementations that will be integrated into iOS apps.
- Assign small to medium iOS tasks that are logic-centric and do not require deep platform lifecycle or background/permission handling.
- Mentor to convert algorithm solutions into tested, production-ready model-layer code with unit tests and input validation.
- Develop interview preparation content, coding kata, or algorithmic challenge authoring in Swift.
Repositories
The developer's experience in this domain has been verified based on AI analysis of the following repositories: