ARSENII DOROGIN
Senior iOS Developer
Valencia, Spain
LinkedIn: https://es.linkedin.com/in/arsenii-dorogin-355335176

Headline
Senior iOS Developer | Swift | SwiftUI | Firebase | Mobile Architecture

About
iOS Developer with experience building and maintaining mobile applications using Swift and Apple ecosystem technologies. Strong background in app architecture, networking, analytics, performance optimization, and third-party integrations. Also experienced with backend and AI projects, which helps bridge mobile, product, and server-side development.

Skills
- Swift
- UIKit
- SwiftUI
- SnapKit
- Moya
- Firebase
- Firebase Analytics
- Firebase Crashlytics
- REST APIs
- Codable
- UserDefaults
- Keychain
- Git
- Jira
- Figma
- App Store release process
- MVVM
- Clean Architecture
- Dependency Injection

Experience
iOS Developer / Freelance & Contract
Valencia, Spain

Responsibilities
- Developed and maintained iOS applications using Swift.
- Built scalable app architectures using MVVM and reusable components.
- Integrated REST APIs and third-party SDKs.
- Implemented Firebase Analytics, Crashlytics, and push notifications.
- Improved app performance, stability, and maintainability.
- Worked with designers, backend developers, and product managers.

Key Projects
1. Mobile Analytics Platform
Implemented analytics tracking for screen duration, user interactions, button clicks, network timing, and performance metrics.

2. API-driven iOS Applications
Built networking layers using Moya, Codable, and dependency injection for scalable API integration.

3. Firebase Integration
Integrated Firebase Analytics, Crashlytics, and push notifications to improve product visibility and app stability.

Additional Experience
Backend & AI Projects
Experience with Python, FastAPI, Docker, OpenAI API, Slack bots, automation tools, and AI assistants. This experience helps with full-cycle product development and communication between mobile and backend systems.

Languages
- Russian — Native
- English — Professional Working Proficiency
- Spanish — Intermediate