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Senior
Регистрация: 23.03.2026

Александр Сисов

Специализация: iOS Engineer
— Improved iOS development speed by 40% by integrating an auto-generated REST API layer, reduced module creation time by 80% with an internal CLI tool, and led modular VIPER architecture while mentoring developers. — Built performance-critical mobile solutions including WebRTC streaming with latency under 150 ms and BLE pipelines processing 1M+ events monthly with a 70% sync performance improvement. — Senior iOS Developer specializing in scalable, high-performance mobile applications built with Swift, SwiftUI, UIKit, and modern iOS architecture. — Strong background in fintech, health tech, BLE-enabled apps, offline-first systems, and real-time communication. — Experienced with Clean Architecture, MVVM, VIPER, modularization, Swift Concurrency, Combine, CoreData, REST APIs, testing, CI/CD, and distributed product teams. — In addition, I bring 14+ years of mobile development experience and extensive hands-on experience building products from scratch to MVP. — In most of my roles, I joined at an early stage, took ownership of the initial architecture and feature delivery, helped bring the product to MVP, and then continued scaling it together with a growing team. — Open to fully remote B2B, contract, and freelance opportunities worldwide.
— Improved iOS development speed by 40% by integrating an auto-generated REST API layer, reduced module creation time by 80% with an internal CLI tool, and led modular VIPER architecture while mentoring developers. — Built performance-critical mobile solutions including WebRTC streaming with latency under 150 ms and BLE pipelines processing 1M+ events monthly with a 70% sync performance improvement. — Senior iOS Developer specializing in scalable, high-performance mobile applications built with Swift, SwiftUI, UIKit, and modern iOS architecture. — Strong background in fintech, health tech, BLE-enabled apps, offline-first systems, and real-time communication. — Experienced with Clean Architecture, MVVM, VIPER, modularization, Swift Concurrency, Combine, CoreData, REST APIs, testing, CI/CD, and distributed product teams. — In addition, I bring 14+ years of mobile development experience and extensive hands-on experience building products from scratch to MVP. — In most of my roles, I joined at an early stage, took ownership of the initial architecture and feature delivery, helped bring the product to MVP, and then continued scaling it together with a growing team. — Open to fully remote B2B, contract, and freelance opportunities worldwide.

Скиллы

SwiftUI, UIKit
SwiftUI
UIKit
Swift
Combine
CoreData
Firebase
WebRTC
MVVM
VIPER
Clean Architecture
Modular Architecture
Swift Concurrency
Fastlane
Jenkins
Bitrise
XCTest
Testing
REST API

Опыт работы

Senior iOS Developer
02.2025 - 02.2026 |Rakuten Viber
UIKit, Swift, Network
Senior iOS Developer
Senior iOS Developer
08.2025 - 12.2025 |Devlight (Health Module)
Swift, Clean Architecture
● Designed modular Swift Package for biometric tracking. ● Integrated BLE devices for real-time data and feedback. ● Built scalable components using Clean Architecture.
iOS Developer
04.2025 - 08.2025 |Software MacKiev
Swift, Objective-C, SwiftUI, UIKit, Combine, CoreData, Firebase, WebRTC
● Refactored legacy codebase and improved stability. ● Fixed critical bugs and improved performance.
Senior iOS Developer
11.2023 - 02.2025 |Mapletton Hill
Swift, Objective-C, SwiftUI, UIKit, Combine, CoreData, Firebase, WebRTC
● Designed offline-first architecture with background sync. ● Optimized large datasets using CoreData and async processing. ● Built map-based UI for data visualization.
iOS Developer
09.2021 - 03.2025 |Andersen Lab
VIPER, REST API, XcodeGen
● Led modular architecture design using VIPER and mentored 2–3 developers. ● Integrated auto-generated REST API layer (+40% dev speed) and reduced merge conflicts via XcodeGen. ● Reduced module creation time by 80% with internal CLI tool.
Senior iOS / Tech Lead
01.2016 - 09.2021 |ZeusElectronics
Swift, Objective-C, SwiftUI, UIKit, Combine, CoreData, Firebase, WebRTC
● Led real-time streaming apps using WebRTC (latency <150ms). ● Processed 1M+ BLE events monthly (+70% sync performance).

Образование

Computer Science (Бакалавр)
National Technical University of Ukraine (KPI)

Языки

АнглийскийСреднийУкраинскийПродвинутый