Key Project
Mobile Analytics Platform
Implemented analytics tracking for screen duration, user interactions, button clicks, network timing, and performance metrics.
Valencia, Spain
Senior iOS Developer
Arsenii Dorogin
Senior iOS Developer | Swift | SwiftUI | Firebase | Mobile Architecture
I build stable, scalable iOS products with a strong focus on architecture, performance, analytics, and maintainable engineering systems.
Focus
Swift-first mobile engineering
Production iOS apps, architecture design, analytics, and release workflows.
Cross-functional edge
Mobile + backend + AI
Product-minded execution across app, server-side, automation, and AI tooling.
About
Architecture-minded iOS development with product context
I build and maintain mobile applications using Swift and Apple ecosystem technologies, with a strong background in app architecture, networking, analytics, performance optimization, and third-party integrations.
Beyond iOS, I also work on backend and AI projects. That broader engineering scope helps me bridge mobile, product, and server-side development, communicate clearly with cross-functional teams, and make architecture decisions that fit the whole product instead of only the client layer.
- Role
- Senior iOS Developer
- Location
- Valencia, Spain
- Specialties
- Swift, SwiftUI, Firebase
Skills
Tools and patterns used in production iOS work
A practical toolkit centered on native iOS development, scalable architecture, and product-quality delivery.
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
Freelance and contract iOS product development
Hands-on work across architecture, API integrations, analytics, performance optimization, and collaboration with design and backend teams.
iOS Developer / Freelance & Contract
Valencia, Spain
Product engineering
- 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.
Projects
Representative work across analytics, APIs, and stability
Selected examples of the kinds of systems and product capabilities I’ve built and improved.
Key Project
API-driven iOS Applications
Built networking layers using Moya, Codable, and dependency injection for scalable API integration.
Key Project
Firebase Integration
Integrated Firebase Analytics, Crashlytics, and push notifications to improve product visibility and app stability.
Additional Experience
Backend and AI work that supports full-cycle product delivery
Experience beyond iOS that improves technical communication, system thinking, and end-to-end product execution.
Backend & AI Projects
Experience with Python, FastAPI, Docker, OpenAI API, Slack bots, automation tools, and AI assistants. This background helps with full-cycle product development and communication between mobile and backend systems.
Languages
Communication across product and engineering contexts
Comfortable working in multilingual teams and cross-functional collaboration environments.
Russian
Native
English
Professional Working Proficiency
Spanish
Intermediate
Contact
Open to product-focused iOS opportunities
For freelance, contract, or full-time roles, reach out through LinkedIn.